Search Results: "Daniel Lange"

Installing a laptop with the shiny new Debian Bookworm release finds a few interesting things broken that I probably had fixed in the past already on the old laptop. One, that was increadibly unintuitive to fix, was lots of applications (like xfce4-terminal or Telegram) opening links in Chromium despite Firefox being set as the preferred webbrowser everywhere. update-alternatives --config x-www-browser was pointing at Firefox already, of course.
The Xfce4 preferred application from settings was Firefox, of course.
xdg-mime query default text/html delivered firefox-esr.desktop, of course. Still nearly every link opens in Chromium... As usually the answer is out there. In this case in a xfce4-terminal bug report from 2015. The friendly "runkharr" has debugged the issue and provides the fix as well. As usually, all very easy once you know where to look. And why to hate GTK again a bit more: The GTK function gtk_show_uri() uses glib's g_app_info_launch_default_for_uri() and that - of course - cannot respect the usual mimetype setting. So quoting "runkharr" verbatim:

1. Create a file  exo-launch.desktop  in your  ~/.local/share/applications  directory with something like the following content:
    [Desktop Entry]
    Name=Exo Launcher
    Type=Application
    Icon=gtk-open
    Categories=Desktop;
    Comment=A try to force 'xfce4-terminal' to use the preferred application(s)
    GenericName=Exo Launcher
    Exec=exo-open %u
    MimeType=text/html;application/xhtml+xml;x-scheme-handler/http;x-scheme-handler/https;x-scheme-handler/ftp;application/x-mimearchive;
    Terminal=false
    OnlyShowIn=XFCE;
2. Create (if not already existing) a local  defaults.list  file, again in your  ~/.local/share/applications  directory. This file must start with a "group header" of
    [Default Applications]
3. Insert the following three lines somewhere below this  [Default Applications]  group header [..]:
    x-scheme-handler/http=exo-launch.desktop;
    x-scheme-handler/https=exo-launch.desktop;
    x-scheme-handler/ftp=exo-launch.desktop;

And ... links open in Firefox again. Thank you "runkharr"!

After an upgrade of my PC's mainboard BIOS the boot would take a minute or more to complete and sometimes the lightdm login screen would sit there but not accept keyboard input for another minute or so. Then the keyboard got enabled and I could log in normally. Everything worked fine after that bootup struggle completed. This was fully reproducible and persisted across reboots. Weird. The kernel dmesg log showed entries that looked suspicious: dmesg log excerpt showing USB error messages

dmesg log excerpt showing USB error messages

Googleing these error -110 and error -71 is a bit hard. Now why the USB driver does not give useful error messages instead of archaic errno-style numbers escapes me. This is not the 80s anymore. Citation needed (Wikipedia style)

The wisdom of the crowd says error -110 is something around "the USB port power supply was exceeded" [source]. Now lsusb -tv shows device 1-7 ... to be my USB keyboard. I somehow doubt that wants more power than the hub is willing to provide. The Archlinux BBS Forums recommend to piece together information from drivers/usb/host/ohci.h and (updated from their piece which is from 2012) /tools/include/uapi/asm-generic/errno.h. This is why some people then consider -110 to mean "Connection timed out". Nah, not likely either. Reading through the kernel source around drivers/usb/host did not enlighten me either. To the contrary. Uuugly. There seems to be no comprehensive list what these error codes mean. And the numbers are assigned to errors conditions quite arbitrarily. And - of course - there is no documentation. "It was hard to do, so it should be hard to understand as well." Luckily some of the random musings I read through contained some curious advice: power cycle the host. So I did and that did not make the error go away. Other people insisted on removing cables out of wall sockets, unplugging everything and conducting esoteric rituals. That made it dawn on me, the mainboard of course nicely powers the USB in "off" state, too. So switching the power supply off (yes, these have a separate switch, go find yours), waiting a bit for capacitors to drain and switching things back on and ... the errors were gone, the system booted within seconds again. So the takeaway message: If you get random error messages like

device descriptor read/64, error -110
device not accepting address 42, error -71

on devices that previously worked fine ... completely remove power from the host, the hubs and the USB devices. So they forget they saw each other on the bus before. And when they see each other after that blackout, they will happily go through negotiating protocol details with each other again successfully.

Canonical has implemented a staged roll-out for some Ubuntu package updates. I find that rather annoying at times, e.g. when preparing the laptop for traveling. So for my memory and for the benefit of others:

# disable the phased roll-out feature on this apt upgrade run
sudo apt -o "APT::Get::Always-Include-Phased-Updates=true" dist-upgrade

Screenshot of apt with the option to disable staged rollouts

This can - for permanent use - be put into a config file, e.g. Gerrit Heim puts it into /etc/apt/apt.conf.d/99-Phased-Updates [German]. Some other options around this staged roll-out feature are "documented" on a thread in the Ubuntu discourse forum.

I've been mocking the Linux foundation for producing their annual report on Macs. And again. But catching the Linux App(lication) Summit to produce their 5 page sponsorship brochure one Windows with Adobe... Produced by Adobe InDesign 18.1 on Windows

Produced by Adobe InDesign 18.1 on Windows

Apparently neither GNOME nor KDE have apps that are sufficient to produce such content. Wtf folks. P.S.: Just checked the Linux Foundation's 2022 Annual Report titled "Leadership in Security and Innovation" ... Adobe InDesign 18.0 (Macintosh). Their pdf title looks like this:

pdfgrep -ic quality "2022 Linux Foundation Annual Report.pdf" -> 8

Pdf is hard.

I've been calling out the Linux foundation for producing their annual report on Macs. And again. But catching the Linux App(lication) Summit to produce their 5 page sponsorship brochure one Windows with Adobe... Produced by Adobe InDesign 18.1 on Windows

Pdf is hard.

Talking to ChatGPT v4 (2023-03-14 release)... Q: What is the purpose of life? A: The purpose of life is a philosophical question that has puzzled humans for centuries. Different people and cultures have different answers to this question. Some people believe that the purpose of life is to seek happiness, while others believe that it is to fulfill a particular destiny or achieve a specific goal. From a biological perspective, the purpose of life could be to ensure the survival and reproduction of our species. However, this does not explain the purpose of our individual lives or the purpose of life in general beyond a biological imperative. Ultimately, the purpose of life is a subjective and personal matter, and each individual may have their own unique answer to this question. It may involve personal growth, meaningful relationships, contributing to society, or finding spiritual fulfillment. The purpose of life is a journey of self-discovery that each of us must undertake for ourselves. Q: What is the purpose of your life, ChatGPT? A: As an artificial intelligence language model, I do not have a personal life or consciousness, so I do not have a purpose in the same way that humans do. My purpose is to assist and provide information to those who interact with me to the best of my ability based on my training and programming. (emphasis added by human)

Thunderbird, srsly?

5MB (or 4.8MiB) import limit. Sure. My modest pubring (111 keys) is 18MB. The Debian keyring is 28MB. May be, just may be, add another 0 to that if statement? So, until that happens, workarounds ... Option 1: Export each pubkey into a separate file. The import dialog allows to select them all in one go. But - of course - it will ask confirmation for each. So prepare some valerian tea.

gpg --with-colons --list-public-keys grep ^pub cut -d : -f 5 xargs -I -n 1 gpg -ao .pub --export ;

Option 2: Strip all the signatures, so Thunderbird gets a smaller file to chew on. This uses pgp-clean from signing-party.

gpg --with-colons --list-public-keys grep ^pub cut -d : -f 5 xargs pgp-clean -s >> there_you_go_thunderbird.pub

Option 1 will retain the signatures on individual keys, Option 2 will not.

The GnuPG (gpg) ecosystem has been played with a bit in 2019 by adding fake signatures en masse to well known keys. The main result is that the SKS Keyserver network based on the OCaml software of the same name is basically history. A few other keyservers have come up like Hagrid (Rust) and Hockeypuck (Go) but there seems to be no clear winner yet. In case you missed it in 2019, see my take on cleaning these polluted keys. Now the changed defaults in gpg to "mitigate" this issue are trickling down to even the conservative distributions. Debian Bullseye has self-sigs-only on gpg 2.2.27 and it looks like Debian Bookworm will get gpg 2.2.40. This would add import-clean but Daniel Kahn Gillmor patched it out. He argues correctly that this new default could delete data from good locally store pubkeys. This all ends in you getting some random combination of self-sigs-only and / or import-clean depending on which Linux distribution and version you happen to use. Better be explicit. I recommend to add:

# disable new gpg defaults
keyserver-options no-self-sigs-only
keyserver-options no-import-clean

to your ~/.gnupg/gpg.conf to make sure you can manage signatures yourself and receive them from keyservers or local imports as intended. In case you care: See info gnupg --index-search=keyserver-options for the fine documentation. Of course apt install info first to be able to read info pages. 'cause who still used them in 2023? Oh, wait...

Thunar, the Xfce4 file manager, has a bug that it underflows the time remaining for a file copy since ten years now (bugzilla, gitlab). Happy birthday!

There is significant effort involved to get your apt or dnf commands always have a consistent set of servers to talk to. That's why running separate "software stores" is a bad idea:

That way more admins need to learn how to run high availability services for dubious business opportunities to "later" monetize services. Services that nobody cares to pay for and thus opportunities that never materialize. But every company wants to find that out again. Because if Apple could do it, why shouldn't Canonical be able to do it? $$$!1!! So, can't update Firefox on Ubuntu 22.04 right now. At least there is https://status.snapcraft.io/:

So I can check back tomorrow if I can update my web browser ... Update 09.11.2022 12:15 CET The Snapcraft distribution system seems quite flaky, this is the downtime log: Log of (frequent) Snapcraft outages

Bonus points for the bad client side implementation:

dl@laptop:~$ sudo snap refresh
All snaps up to date.

# ^this is a lie, just close Firefox and ...

dl@laptop:~$ sudo snap refresh
firefox 106.0.5-1 from Mozilla** refreshed

Youtube has a really nice RSS feature that is extremely well hidden. If you postfix a Channel ID to

https://www.youtube.com/feeds/videos.xml?channel_id=<id goes here>

you get a really nice Atom 1.0 (~RSS) feed for your feedreader. Unfortunately the Channel ID is hard to find while you are navigating Youtube with usernames in the URL. E.g. https://www.youtube.com/c/TED is TED's channel, full of interesting and worth-to-watch content (and some assorted horse toppings, of course). But you have to read a lot of ugly HTML / JSON in that page to find and combine https://www.youtube.com/feeds/videos.xml?channel_id=UCAuUUnT6oDeKwE6v1NGQxug which is the related RSS feed. Jeff Keeling wrote a simple Youtube RSS Extractor that does well if you have a ../playlist?... or a .../channel/... URL but it will (currently) fail on user name channels or Youtube landing pages. So how do we get the Channel ID for a Youtube user we are interested to follow? Youtube has a great API but that is gated by API keys even for the most simple calls (that came only with v3 of the API but the previous version is depreciated since 2015)¹:

dl@laptop:~$ curl 'https://www.googleapis.com/youtube/v3/channels?part=contentDetails&forUsername=DebConfVideos'

"error":
"code": 403,
"message": "The request is missing a valid API key.",
"errors": [

"message": "The request is missing a valid API key.",
"domain": "global",
"reason": "forbidden"

],
"status": "PERMISSION_DENIED"

Luckily we can throw the same (example) user name DebConfVideos at curl and grep:

dl@laptop:~$ curl -s "https://www.youtube.com/c/DebConfVideos/videos" grep -Po '"channelId":".+?"'
"channelId":"UC7SbfAPZf8SMvAxp8t51qtQ"

So https://www.youtube.com/feeds/videos.xml?channel_id=UC7SbfAPZf8SMvAxp8t51qtQ is the RSS feed for DebConfVideos. We can use individual Youtube video URLs as well. With the hack above, it'll work to find us the Chanel ID from a Youtube video URL: Working around the Youtube API restrictions to still make use of their RSS feed

Working around the Youtube API restrictions to still make use of their RSS feed

Now, some user pages may have multiple valid RSS feeds because they contain multiple channels. Remember the TED page from above? Well run:

dl@laptop:~$ curl -s "https://www.youtube.com/c/TED" grep -Po '"channelId":".+?"' cut -d \" -f 4 while read -r YTID ; do echo -n "Youtube-ID: $YTID " ; curl -s "https://www.youtube.com/feeds/videos.xml?channel_id=$YTID" grep -m 1 -P -o "(?<=<title>).+(?=</title>)" ; done

This will iterate through the Channel IDs found and show you the titles. That way you can assess which one you want to add to your feedreader. screenshot of the above

You probably want the last Channel ID listed above, the non-selective "TED" one. And that's the one from the example above. Update 02.06.2022: smpl wrote in and has the much better solution for the most frequent use cases:

You can also use get a feed directly with a username:
https://www.youtube.com/feeds/videos.xml?user=<username>
The one I use most is the one for playlists (if creators remember to
use them).
https://www.youtube.com/feeds/videos.xml?playlist_id=<playlist id>

For the common case you don't even need the channel ID that way. But it is also conveniently given in a <yt:channelId> tag (or the topmost <id> tag) within the Atom XML document. Thanks, smpl!

Actually it is even more complicated as some channels, like our DebConfVideos example, will only get you an incomplete result, cf. this StackOverflow entry. I.e. the forUsername iterator may not even work and the "best practice" seems to be mucking around with the search call.

The company got me a Chromebook for times when I want to ignore email and not get dragged into code reviews but still be available on IRC and chat. Nifty devices at great price points. I really like them. Chromebook logo

These things are meant to be very consumer-style end-user devices. You log in with your Google account and everything works. Until it doesn't. Just setting it up caused the first issue: I was always thrown back to a black screen and then another login-screen despite having successfully logged in initially to create the "owner" user of the Chromebook. No error message, not useful UI feedback. Just logging in again and again and again. The issue is ... not having a GMail account associated with my Google account. Duh! So add a GMail.com address as the primary to your Google account and the initial setup completes. Of course you cannot delete that GMail.com association again because the owner user is linked to the email and not the account. Well, you can delete it but then you cannot configure "owner" items of your Chromebook any more. Great job, Google. Not. Identity management 101 fail. Kudos to Anurag Chawake for blogging about the issue. The Google support forum thead claims this is solved now. But it didn't work for me, so this may be needing to trickle down through ChromeOS releases or be deployed on more Google infra. Or whatever. We can't tell from outside the Googleplex as - of course - "Rebecca" sheds no light on what the identified "root cause" was: Google Forum answer

Once I was able to login to the new Chromebook all worked fine until I started to use ssh sessions. These always hung for 30 seconds to 10 minutes and then resumed with lots of packets lost in between and the last minute or so coming in from buffering in a burst. This was easy to see in ping as well. The connection essentially dropped dead while the WiFi icon was continuing to show full signal strength. The logs did not show anything useful. These are really hard to access on ChromeOS (JSON format and no useful UI on the Chromebook itself, Google provides a viewer on Google Apps Toolbox but that requires uploading the logs). Better than no logs at all but not really nice. The ChromeOS bug tracker and its Google corporate counterpart are also not useful at this time. For reference:
Google ... Device users randomly disconnect from Wi-Fi network
Chromium ... Device users randomly disconnect from Wi-Fi network
Google ... Constant connect and disconnect from WiFi source post-update
Chromium ... Constant connect and disconnect from WiFi source post-update Playing around with the device on the network showed that it reduced sending power beyond being able to reach the access point any more. This is why disconnecting and re-connecting the WiFi fixes the issue for a few minutes, typically. Still, there is a better way: In crosh (the ChromeOS shell available when pressing Alt+Ctrl+T) type:

wifi_power_save disable

This unfortunately only lasts until the next reboot but it does persist over suspend cycles (aka closing the lid).

Updates 24.01.2022: What I love about the community is the playful creativity that inspires a game like Wordle and that in turn inspires others to create fun tools around it: Robert Reichel has reverse engineered the Wordle application, so in case you want to play tomorrow's word today .. you can. Or have that one guess "Genius" solution experience. JP Fosterson created a Wordle helper that is very much the Python version of my grep-foo above. In case you play regularly and can use a hand. And Tom Lockwood wrote a Wordle solver also in Python. He blogged about it and ... is pondering to rewrite things in Rust:

I ve decided to explore Rust for this, and so far what was taking 1GB of RAM in Python is taking, literally 1MB in Rust!

Welcome to 2022. 01.02.2022: OMG. Wordle has been bought by the New York Times for "for a price in the low seven figures" (Source). Joey Rees-Hill put it well in The Death of Wordle:

Today s Web is dominated by platforms. The average Web user will spend most of their time on large platforms such as Instagram, Facebook, Twitter, TikTok, Google Drive/Docs, YouTube, Netflix, Spotify, Gmail, and Google Calendar, along with sites operated by large publishers such as The New York Times or The Washington Post. [..]
The Web wasn t always this way. I m not old enough to remember this, but things weren t always so centralized. Web users might run their own small website, and certainly would visit a good variety of smaller sites. With the increasing availability of internet access, the Web has become incredibly commercialized, with a handful of companies concentrating Web activity on their own properties.
Wordle was a small site that gained popularity despite not being part of a corporate platform. It was wonderful to see an independent site gain attention for being simple and fun. Wordle was refreshingly free of attention-manipulating dark patterns and pushy monetization. That s why it s a shame to see it absorbed, to inevitably become just another feature of one large media company s portfolio.

Still kudos to Josh Wardle, a Million Pounds for Wordle. Well done! It was fun while it lasted. Let's see what the next Wordle will be. This one has just been absorbed into the borg collective.

After last year's blunder with trying to hide the Adobe toolchain and using hilarious stock photos, the Linux Foundation did much better in their 2021 annual report¹ published Dec. 6, 2021. Still they are using the Adobe toolchain (InDesign, Acrobat PDF) and my fellow ~~Debian~~Kernel² Developer Geert was quick to point that out as the first comment to the LWN note on the publication:

I think it is important to call the Linux Foundation (LF) out again and again. Adobe is a Silver member of the LF and they can motivate them to publish their applications for Linux. And if that is not an option, there are Free alternatives like Scribus that could well use the exposure and funds of LF to help catch up to the market leading product, Adobe InDesign. Linux Foundation Annual report 2021, document properties

Linux Foundation Annual report 2021, document properties

Personally, as a photographer, I am very happy they used stock images from Unsplash to illustrate the 2021 edition over the cringeworthy Shutterstock footage from last year's report. And they gave proper credit: Thank you section for Unsplash from the Linux Foundation 2021 annual report

Thank you section for Unsplash from the Linux Foundation 2021 annual report

Now for next year ... find an editor that knows how to spell photographers, please. And consider Scribus. And make Adobe publish their apps for Linux. Thank you.

Update 07.12.2021 22:00 CET: I had to replace the link to the Linux Foundation 2021 annual report with an archive.org one as they updated the report to fix the typo as per the comment from Melissa Schmidt below. Stable URLs are not a thing, apparently. You can find their new report at https://www.linuxfoundation.org/wp-content/uploads/2021_LF_Annual_Report_120721c.pdf. Unless somebody points out more typos. There is a Last-Modified Header in HTTP 1.1. Wordpress, Varnish and Nginx, serving the LF website, all support that.
08.12.2021: Geert Uytterhoeven wrote in that he is "geert" on LWN, both are very nice Geert's but different Geert's :-)

So, 2021 isn't bad enough yet, but don't despair, people are working to fix that:

Welcome to the Stallman wars Team Cancel: https://rms-open-letter.github.io/ (repo) Team Support: https://rms-support-letter.github.io/ (repo) Current stats are:

Team Cancel:  3028 signers from 1413 individual commit authors
Team Support: 6249 signers from 5018 individual commit authors

Git shortlog (Top 10):

rms_cancel.git (Last update: 2021-04-07 15:42:33 (UTC))
  1228  Neil McGovern
   251  Joan Touzet
    86  Elana Hashman
    71  Molly de Blanc
    36  Shauna
    19  Juke
    18  Stefano Zacchiroli
    17  Alexey Mirages
    16  Devin Halladay
    14  Nader Jafari
rms_support.git (Last update: 2021-04-12 09:25:53 (UTC))
  1678  shenlebantongying
  1564  nukeop
  1550  Ivanq
   826  Victor
   746  Job Bautista
   123  nekonee
    61  Victor Gridnevsky
    38  Patrick Spek
    25  Borys Kabakov
    17  KIM Taeyeob

(last updated 2021-04-12 09:26:15 (UTC)) Technical info:
Signers are counted from their "Signed / Individuals" sections. Commits are counted with git shortlog -s.
Team Cancel also has organizational signatures with Mozilla, Suse and X.Org being among the notable signatories. Debian is in the process of running a GR to join (or not join) that list. The 16 original signers of the Cancel petition are added in their count. Neil McGovern, Juke and shenlebantongying need .mailmap support as they have committed with different names. Further reading:

An introductory Ars Technica article in case you wonder what this all is about.
Debian vote mailing-list: March 2021, April 2021
NYT Magazine on the history of cancel culture
Ed Santos' commentary and analysis

The first install of a Gentoo kernel needs to be somewhat manual if you want to optimize the kernel for the (virtual) system it boots on. In part 1 I laid out how to improve the subsequent emerges of sys-kernel/gentoo-sources with a small drop in script to build the kernel as part of the ebuild. Since end of last year Gentoo also supports a less manual way of emerging a kernel: The following kernel blends are available:

sys-kernel/gentoo-kernel (the Gentoo kernel you can configure and compile locally - typically this is what you want if you run Gentoo)
sys-kernel/gentoo-kernel-bin (a pre-compiled Gentoo kernel similar to what genkernel would get you)
sys-kernel/vanilla-kernel (the upstream Linux kernel, again configurable and locally compiled)

So a quick walk-through for the gentoo-kernel variant: 1. Set up the correct package USE flags We do not want an initrd and we want our own config to be re-used so:

echo "sys-kernel/gentoo-kernel -initramfs savedconfig" >> /etc/portage/package.use/gentoo-kernel

2. Preseed the saved config The current kernel config needs to be saved as the initial savedconfig so it is found and applied for our emerge below:

mkdir -p /etc/portage/savedconfig/sys-kernel
cp -n "/usr/src/linux-$(uname -r)/.config" /etc/portage/savedconfig/sys-kernel/gentoo-kernel

3. Emerge the new kernel

emerge sys-kernel/gentoo-kernel

4. Update grub and reboot Unfortunately this ebuild does not update grub, so we have to run grub-mkconfig manually. This can again be automated via a post_pkg_postinst() script. See the step 7 below. But for now, let's do it manually:

grub-mkconfig -o /boot/grub/grub.cfg
# All fine? Time to reboot the machine:
reboot

5. (Optional) Prepare for the next kernel build Run etc-update and merge the new kernel config entries into your savedconfig. Screenshot of etc-update

The kernel should auto-build once new versions become available via portage. Again the etc-update can be automated if you feel that is sufficiently safe to do in your environment. See step 7 below for details. 6. (Optional) Remove the old kernel sources If you want to switch from the method based on gentoo-sources to the gentoo-kernel one, you can remove the kernel sources:

emerge -C "=sys-kernel/gentoo-sources-5*"

Be sure to update the /usr/src/linux symlink to the new kernel sources directory from gentoo-kernel, e.g.:

rm /usr/src/linux; ln -s "/usr/src/$(uname -r)" /usr/src/linux

This may be a good time for a bit more house-keeping: Clean up a bit in /usr/src/ to remove old build artefacts, /boot/ to remove old kernels and /lib/modules/ to get rid of old kernel modules. 7. (Optional) Further automate the ebuild In part 1 we automated the kernel compile, install and a bit more via a helper function for post_pkg_postinst(). We can do the similarly for what is (currently) missing from the gentoo-kernel ebuilds: Create /etc/portage/env/sys-kernel/gentoo-kernel with the following:

post_pkg_postinst()
etc-update --automode -5 /etc/portage/savedconfig/sys-kernel
grub-mkconfig -o /boot/grub/grub.cfg

The upside of gentoo-kernel over gentoo-sources is that you can put "config override files" in /etc/kernel/config.d/. That way you theoretically profit from config improvements made by the upstream developers. See the Gentoo distribution kernel documentation for a sample snippet. I am fine with savedconfig for now but it is nice that Gentoo provides the flexibility to support both approaches.

Gentoo emerges of sys-kernel/gentoo-sources will nicely install the current kernel into /usr/src/linux-* but it will not compile them. The Gentoo wiki kernel documentation has a script snippet to automate the kernel build with genkernel. I do not like to use genkernel as it brings in lots of firmware files to build initrds that are not needed on virtual hardware. It also makes building the kernel slower. So, the plain approach: Make emerge sys-kernel/gentoo-sources symlink the latest kernel to /usr/src/linux so we can find it easily:

echo "sys-kernel/gentoo-sources symlink" >> /etc/portage/package.use/gentoo-sources

Create /etc/portage/env/sys-kernel/gentoo-sources with the following:

post_pkg_postinst()
CURRENT_KV=$(uname -r)
unset ARCH
if [[ -f "$ EROOT:-/ usr/src/linux-$ CURRENT_KV /.config" ]] ; then
cp -n "$ EROOT:-/ usr/src/linux-$ CURRENT_KV /.config" "$ EROOT:-/ usr/src/linux/.config"
cd "$ EROOT:-/ usr/src/linux/" && \
make olddefconfig && \
make -j5 && make modules_install && make install && \
grub-mkconfig -o /boot/grub/grub.cfg
fi

This will compile the next kernel on the basis of the config of the currently running kernel, install the modules and the kernel bzImage and update grub so it knows about the new kernel for the next reboot. If you forget to unset ARCH the Linux build system will complain like:

Makefile:583: arch/amd64/Makefile: No such file or directory
make: *** No rule to make target 'arch/amd64/Makefile'.  Stop.

You can test the new magic by re-emerging the latest kernel, e.g. currently emerge =sys-kernel/gentoo-sources-5.4.80-r1:

Gentoo emerge with embedded kernel compile

echo "sys-kernel/gentoo-sources symlink" >> /etc/portage/package.use/gentoo-sources

Create /etc/portage/env/sys-kernel/gentoo-sources with the following:

Makefile:583: arch/amd64/Makefile: No such file or directory
make: *** No rule to make target 'arch/amd64/Makefile'.  Stop.

You can test the new magic by re-emerging the latest kernel, e.g. currently emerge =sys-kernel/gentoo-sources-5.4.80-r1:

System Rescue, the project formerly known as System Rescue CD, has moved from being based on Gentoo to being built on Arch Linux packages. With this their ISO layout changed substantially so when updating my trusty recue USB flash drive, I could not just update the kernel, initrd and the root filesystem image as I had typically done every other year before. The "Installing on a USB memory stick" documentation is good for Windows (use Rufus, it's nice) but rather useless for Linux. They recommend a dd or the fancy graphical version of that, called usbimager. I much prefer to have a flash drive that I can write to over an image of a CD (ISO) written 1:1 onto the flash media. The basic idea is to use the bulk of the System Rescue ISO contents but amend these with your own grub and syslinux so they work as intended over the supplied ones that are bound to the ISO layout a bit too much. I did this on Debian Buster but with some adjustments to paths and what packages to install, any recent Linux distribution should do: Continue reading "Installing System Rescue (CD) to a flash drive"

The virtual version of the annual CCC Congress is underway and feels like a huge playground. Things are bumpy but the participants are still having fun. Of course, we have IRC as a save heaven. That always works. The virtual world (which is the only thing the sold out tickets are needed for) is really fun. It feels like debugging a DOS game in the 80/90s. Not much works but it is engaging enough to keep poking at things.

The data formats are 2020 though, the main "lobby map" is a 3 MB json file:

  "compressionlevel":-1,
 "editorsettings":
     
     "export":
         
         "format":"json",
         "target":"main.json"
         
     ,
 "height":80,
 "infinite":false,
 "layers":[
         
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         "height":80,
         "id":2,
         "name":"start",
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...

People that hand-optimized RLEs to fit games on floppies cry a little. Anyways, the streams are free (as in public), so please check https://streaming.media.ccc.de/ and the schedule at https://fahrplan.events.ccc.de/rc3/2020/Fahrplan/ for some great content to watch live or add to your play list.

Search Results: "Daniel Lange"

27 June 2023

Daniel Lange: Xfce4 opening links in Chromium despite Firefox having been set as the default browser

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Daniel Lange: Linux App Summit - Linux applications apparently unable to produce a five page sponsorship brochure

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Daniel Lange: Compiling and installing the Gentoo Linux kernel on emerge without genkernel (part 2)

28 January 2021

Daniel Lange: Compiling and installing the Gentoo Linux kernel on emerge without genkernel

Daniel Lange: Compiling and installing the Gentoo Linux kernel on emerge without genkernel (part 1)

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28 December 2020

Daniel Lange: No CCC Congress this year but rc3 online