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"

This is the subject of an interesting thread on the debian-devel mailing list. It started with ".. The current policy of hiding other versions of Debian is limiting the adoption of your OS by people like me.." It seems that this user managed to contact us developers and give us some important information how we can improve the user experience. The following discussion shows that all our users need non-free firmware to get their wireless network cards run. Do we provide such installation images for our users? Sure. We build them regularly, host them on our servers, we also sign the hash sum with our official signing key. But we hide them very well and still call them unofficial. Why? I would like to have a more positive name for those images. Ubuntu has the HWE (Hardware Enablement) kernel. Maybe Debian firmware enablement images? We should better promote the images that fits best for our users. BTW, the URL for all these useful images is https://cdimage.debian.org/cdimage/unofficial/non-free/images-including-firmware/ Since I'm not using the Debian installer or live image often, I thought my own installation tool would already do better. In FAI , I install the package firmware-linux-nonfree if I need some nonfree firmware. But it appears that this package does not depend on any WiFi firmware package. Oops. So, I've filed a bug report #980758 and propose to add another meta package that depends on a list of firmware packages for WiFi cards. I've now added a workaround to the FAIme service. You can now generate fully automated customized installation images including nonfree firmware for the stable and testing release. The stable release images can also use a newer kernel and firmware from backports. All other package are still from stable. Another useful image variant in my opinion. Debian FAIme

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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         "id":2,
         "name":"start",
         "opacity":1,
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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.

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"
         
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 "height":80,
 "infinite":false,
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         "height":80,
         "id":2,
         "name":"start",
         "opacity":1,
         "type":"tilelayer",
         "visible":true,
         "width":80,
         "x":0,
         "y":0
         , 
...

People that hand-optimized RLEs to fit games on floppies cry a little. 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.

The Linux Foundation has published its annual report today. LWN calls it glossy and yeah, boy, it is shiny. So shiny that people that work in the publishing industry immediately see this has been produced with the Adobe toolchain which - unfortunately - is one of the big suites of software not yet available for Linux. Checking the PDF file metadata reveals the keywords "open source, open standards, open hardware, open data". That is what the Linux Foundation is about. Good stuff. The PDF producer meta data for the annual report PDF has been set to "Linux kernel 0.12.1 for Workgroups" and the PDF creator meta data element to "Sharp Zaurus XR-5000 (Maemo5) Edition". Somebody thought to better hide the real data and had some tongue-in-cheek ideas. Kudos. But nicer would have been to use Open Source software to produce the report, not? Running strings 2020-Linux-Foundation-Annual-Report_113020.pdf grep Adobe wc -l gives us 1229 lines and confirms the suspicion of the toolchain. A stale /Title (Annual Report 2020) /Producer (macOS Version 10.15.7 \(Build 19H15\) Quartz PDFContext) has been forgotten in the document to tell us about the platform. So, ladies and gentlemen, the Linux Foundation 2020 annual report has been produced on a Mac. Running Adobe Creative Cloud on MacOS Catalina 10.15.7. Which is proprietary software. Its kernel (and some userland pieces) are based on BSD. Not Linux.

---

The image on the front page also struck me as a bit odd ... using a ballpoint pen on the laptop screen? Unbranded laptop. Unbranded cup in the foreground. Kid in the background not paying attention to his tablet. All of that cries stock image so loud it hurts. Google currently finds ~560 uses of the picture and any editorial use nicely tells us that it is Dragana Gordic / Shutterstock. The image is "Smiling mom working at home with her child on the sofa while writing an email. Young woman working from home, while in quarantine isolation during the Covid-19 health crisis". See the Daily Mail for a wonderful example of the working mum in context. I hope, if her laptop had been powered on, it would have run Linux. I mean, what else would still run on an old white MacBook with an Intel "Core 2 Duo" processor from 2008? Continue reading "No dog food today - the Linux Foundation annual report"

Show https://github.com/torvalds/linux/blob/b4061a10fc29010a610ff2b5b20160d7335e69bf/drivers/hid/hid-samsung.c#L113-L118 to a friend. Oops 'eh? Yep, Linux has been backdoored. Well, or not. Konstantin Ryabitsev explains it nicely in a cgit mailing list email:

It is common for git hosting environments to configure all forks of the same repo to use an "object storage" repository. For example, this is what allows git.kernel.org's 600+ forks of linux.git to take up only 10GB on disk as opposed to 800GB. One of the side-effects of this setup is that any object in the shared repository can be accessed from any of the forks, which periodically confuses people into believing that something terrible has happened.

The hack was discussed on Github in Dec 2018 when it was discovered. I forgot about it again but Konstantin's mail brought the memory back and I think it deserves more attention. I'm sure putting some illegal content into a fork and sending a made up "blob" URL to law enforcement would go quite far. Good luck explaining the issue. "Yes this is my repo" but "no, no that's not my data" ... "yes, it is my repo but not my data" ... "no we don't want that data either, really" ... "but, but there is nothing we can do, we host on github...¹". Update 05.11.20 Nate Friedman (CEO of Github) promises

[..] we are going to make it much more obvious when you're viewing an orphaned commit.

For context: The source code of Github (the product) had been leaked as a commit to Github's own DMCA repository. The repository has turned into a playground since Github took down the hosting for youtube-dl as the result of a DMCA complaint. 14.11.20 Seems Github now adds a warning to commits that are not in a reachable branch

I have been late to adopt an on-premise cloud solution as the security of Owncloud a few years ago wasn't so stellar (cf. my comment from 2013 in Encryption files ... for synchronization across the Internet). But the follow-up product Nextcloud has matured quite nicely and we use it for collaboration both in the company and in FLOSS related work at multiple nonprofit organizations. There is a very annoying "feature" in Nextcloud though that the designers think menu items for apps at the top need to be limited to eight or less to prevent information overload in the header. The whole item discussion is worth reading as it it an archetypical example of design prevalence vs. user choice. And of course designers think they are right. That's a feature of the trade.
And because they know better there is no user configurable option to extend that 8 items to may be 12 or so which would prevent the annoying overflow menu we are seeing with 10 applications in use: Luckily code can be changed and there are many comments floating around the Internet to change const minAppsDesktop = 8. In this case it is slightly complicated by the fact that the javascript code is distributed in compressed form (aka "minified") as core/js/dist/main.js and you probably don't want to build the whole beast locally to change one constant. Basically gets compressed during build time to become part of one 15,000+ character line. The relevant portion reads: Well, we can still patch that, can we? Continue reading "Fixing the Nextcloud menu to show more than eight application icons"

If you clear your browser cookies regularly (as you should do), Google will annoy you with a full screen cookie consent overlay these days. And - of course - there is no "no tracking consent, technically required cookies only" button. You may log in to Google to set your preference. Yeah, I'm sure this is totally following the intent of the EU Directive 2009/136/EC (the "cookie law"). Unfortunately none of the big "anti-annoyances" filter lists seem to have picked that one up yet but the friendly folks from the Computerbase Forum [German] to the rescue. User "Sepp Depp" has created the following filter set that WFM: Add this to your uBlock Origin "My filters" tab:

! Google - remove cookie-consent-popup and restore scroll functionality
google.*##.wwYr3.aID8W.bErdLd
google.*##.aID8W.m114nf.t7xA6
google.*##div[jsname][jsaction^="dg_close"]
google.*##html:style(overflow: visible !important;)
google.*##.widget-consent-fullscreen.widget-consent

DebConf3 This tshirt is 17 years old and from DebConf3. I should probably wash it at 60 celcius for once... DebConf3 was my first DebConf and took place in Oslo, Norway, in 2003. I was very happy to be invited, like any Debian contributor at that time, and that Debian would provide food and accomodation for everyone. Accomodation was sleeping on the floor in some classrooms of an empty school and I remember having tasted grasshoppers provided by a friendly Gunnar Wolf there, standing in line on the first day with the SSH maintainer (OMG!1 (update: I originally wrote here that it wasn't Colin back then, but Colin mailed me to say that he was indeed maintaining SSH even back then, so I've met a previous maintainer there)) and meeting the one Debian person I had actually worked with before: Thomas Lange or MrFAI (update: Thomas also mailed me and said this was at DebConf5). In Oslo I also was exposed to Skolelinux / Debian Edu for the first time, saw a certain presentation from the FTP masters and also noticed some people recording the talks, though as I learned later these videos were never released to the public. And there was this fiveteen year old called Toresbe, who powered on the PDP's which were double his age. And then actually made use of them. And and and. I'm very happy I went to this DebConf. Without going my Debian journey would have been very different today. Thanks to everyone who made this such a welcoming event. Thanks to anyone who makes any event welcoming!

Limesurvey is an online survey tool. It is very powerful and commonly used in academic environments because it is Free Software (GPLv2+), allows for local installations protecting the data of participants and allowing to comply with data protection regulations. This also means there are typically no load-balanced multi-server szenarios with HA databases. But simple VMs where Limesurvey runs and needs upgrading in place. There's an LTS branch (currently 3.x) and a stable branch (currently 4.x). There's also a 2.06 LTS branch that is restricted to paying customers. The main developers behind Limesurvey offer many services from template design to custom development to support to hosting ("Cloud", "Limesurvey Pro"). Unfortunately they also charge for easy updates called "ComfortUpdate" (currently 39 for three months) and the manual process is made a bit cumbersome to make the "ComfortUpdate" offer more attractive. Due to Limesurvey being an old code base and UI elements not being clearly separated, most serious use cases will end up patching files and symlinking logos around template directories. That conflicts a bit with the opaque "ComfortUpdate" process where you push a button and then magic happens. Or you have downtime and a recovery case while surveys are running. If you do not intend to use the "ComfortUpdate" offering, you can prevent Limesurvey from connecting to http://comfortupdate.limesurvey.org daily by adding the updatable stanza as in line 14 to limesurvey/application/config/config.php: The comma on line 13 is placed like that in the current default limesurvey config.php, don't let yourself get confused. Every item in a php array must end with a comma. It can be on the next line. The basic principle of low risk, near-zero downtime, in-place upgrades is:

1. Create a diff between the current release and the target release
2. Inspect the diff
3. Make backups of the application webroot
4. Patch a copy of the application in-place
5. (optional) stop the web server
6. Make a backup of the production database
7. Move the patched application to the production webroot
8. (if 5) Start the webserver
9. Upgrade the database (if needed)
10. Check the application

So, in detail: Continue reading "Upgrading Limesurvey with (near) zero downtime"

The new FAI version 5.9.4 adds support for the new Ubuntu LTS version 20.04 (focal). New FAI installation images (including a Ubuntu only ISO) are available from https://fai-project.org/fai-cd I've added support for the Debian testing release (currently bullseye) to the FAIme service for building customized installation and cloud images. This service still supports the oldstable and stable release including variants with a backports kernel. The FAI.me build service is also using the newest FAI version and the customized ISO images can be booted in an UEFI or legacy BIOS environment. https://fai-project.org/FAIme

People complained that my laptop sound was buzzy, so I bought a proper microphone (thanks to mdw for advice, and loan of some kit). Proper microphones come with a holder that accepts a screw from your microphone stand. In my case, 3/8" "BSW" - similar to 3/8" US standard "coarse" (or if you unscrew a supplied insert, a special 27tpi 5/8" UNS). I don't have a microphone stand and I didn't want to buy one. I have two camera tripods - a small one and a big one. My camera tripods have 1/4" coarse (20tpi) UNC screws. Also, we have a 3D printer at home. And nowadays you can download a configurable screw thread from the internet. So I made myself an adapter. After a few iterations I have a pretty good object which can be used to fit my new microphone to either camera tripod. (I found that a UNC thread was close enough to fit the microphone's BSW.) Of coure, this is Open Hardware and the (short) source code is available. (To build it you'll want to git clone to get the included files.) Pictures below the cut. The flange at the bottom is because tripods usually have a soft top which is supposed to stop scratching the camera; a narrow hexagonal base would make gouges, hence the wide base. ( Read more... )

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" 'Boa constrictors swallow their prey whole, without chewing it. After that they are not able to move, and they sleep through the six months that they need for digestion.' I pondered deeply, then, over the adventures of the jungle. And after some work with a colored pencil I succeeded in making my first drawing. My Drawing Number One. It looked something like this: I showed my masterpiece to the grown-ups, and asked them whether the drawing frightened them. But they answered: 'Frighten? Why should any one be frightened by a hat?' My drawing was not a picture of a hat. It was a picture of a boa constrictor digesting an elephant. But since the grown-ups were not able to understand it, I made another drawing: I drew the inside of a boa constrictor, so that the grown-ups could see it clearly. They always need to have things explained. My Drawing Number Two looked like this: The grown-ups' response, this time, was to advise me to lay aside my drawings of boa constrictors, whether from the inside or the outside, and devote myself instead to geography, history, arithmetic, and grammar. That is why, at the age of six, I gave up what might have been a magnificent career as a painter. I had been disheartened by the failure of my Drawing Number One and my Drawing Number Two. Grown-ups never understand anything by themselves, and it is tiresome for children to be always and forever explaining things to them." from The Little Prince by Antoine de Saint Exup ry from the Corona Fun with Statistics department at Worldometers (source, archive.org link)

Since DebConf 17 I was working on cross-architecture support for FAI. The new FAI release supports creating cross-architecture disk images, for e.g. you can build an image for Arm64 (aarch64) on a host running 64-bit x86 Linux (amd64) in about 6 minutes. The release announcement has more details, and I also created a video showing the build process for an Arm64 disk image and booting this image using Qemu. I'm happy to join the Debian cloud sprint in a week, where more FAI related work is waiting. FAI embedded ARM

During DebConf 17 in Montr al I had a FAI demo session (video), where I showed how to create a customized installation CD and how to create a diskimage using the same configuration. This diskimage is ready for use with a VM software or can be booted inside a cloud environment. During the last weeks I was working on FAI 5.4 which will be released in a few weeks. I you want to test it use

deb https://fai-project.org/download beta-testing koeln

in your sources.list file. The most important new feature will be the cross architecture support. I managed to create an ARM64 diskimage on a x86 host and boot this inside Qemu. Currently I learn how to flash images onto my new Hikey960 board for booting my own Debian images on real hardware. The embedded world is still new for me and very different in respect to the boot process. At DebConf, I also worked on debootstrap. I produced a set of patches which can speedup debootstrap by a factor of 2. See #871835 for details. FAI debootstrap ARM

In this wiki entry, I describe how to extend a FAI nfsroot, so it can be used as a file system for a diskless client or a Live CD. A host can mount it via NFS when booting via PXE. You can create a Live CD easily by using the command fai-cd. This works also nicely with a Xfce desktop, and I've prepared a ISO image for easy testing. You can log in as user demo, and the password is fai. The next thing is to check, if we can use FAI's dirinstall or install method for creating the same environment, so it will be easy to create customized Live images. FAI

If you see Thunderbird hanging during startup for a minute and then continuing to load fine, you are probably running into an issue similar to what I saw when Debian migrated Icedove back to the "official" Mozilla Thunderbird branding and changed ~/.icedove to ~/.thunderbird in the process (one symlinked to the other). Looking at the console log (=start Thunderbird from a terminal so you see its messages), I got:

console.log: foxclocks.bootstrap._loadIntoWindow(): got xul-overlay-merged - waiting for overlay-loaded
[.. one minute delay ..]
console.log: foxclocks.bootstrap._windowListener(): got window load chrome://global/content/commonDialog.xul

Stracing confirms it hangs because Thunderbird loops waiting for a FUTEX until that apparently gets kicked by a XUL core timeout.
(Thanks for defensive programming folks!) So in my case uninstalling the Add-On Foxclocks easily solved the problem. I assume other Thunderbird Add-Ons may cause the same issue, hence the more generic description above.

A book about being woman, mother in a modern but still traditional society. About happiness and fulfillment, love and sex, responsibility and dependency, about life: Stella Stejskal s Im Mezzanin (in German).
Written by a friend back from my old times in Vienna, Stella Stejskal, like me an emigrant, I saw parts of this book during writing, and I was happy to see the final product and read it. The first novel of Stella turns around Anna, the protagonist, a wife, mother, and woman, trying to find her balance between the house, family, kids, work, and her incredible power and thrive to live, live to the fullest.

Dein Leben in der Vorstadt, im Einfamilienhaus mit dem Garten, macht Dich nicht gl cklich. Vordergr ndig hast Du alles, was eine Frau sich w nscht und doch fehlt Dir etwas Wesentliches: Verlangen und Leidenschaft.

(Your life in the suburb, in the one-family home with garden, it doesn t make you happy. On the surface you do have everything what a woman could wish for, but you are missing something essential: desire and passion) The author does not shy away from explicit language without ever dropping into the Vernacolo, the banalities. She manages to convey the incredible tension many of those being stretched out between the necessities of daily life and the need for a more personal life. Last but not least, I loved this book for quoting one of my most favorite lines from a song:

Konstantin Weckers Was passiert in den Jahren, drangen leise durch den Raum. Komm, wir gehen mit der Flut und verwandeln mit den Wellen unsere Angst in neuen Mut , sang ich mit und dachte an den Sommer

For those capable of German, very recommendable.

The FAI webpage is now reachable via HTTPS. You can also access the package repository at fai-project.org via HTTPS if you use this line in /etc/apt/sources.list:

deb https://fai-project.org/download jessie koeln

Thanks to Let's Encrypt for making this possible. FAI

Following up on Steve McIntyre's writeup of the Debian Cloud Sprint that took place in Seattle this past November, I'm pleased to announce the availability of preliminary Debian stretch AMIs for Amazon EC2. Pre-generated images are available in all public AWS regions, or you can use FAI with the fai-cloud-images configuration tree to generate your own images. The pre-generated AMIs were created on 25 January, shortly after Linux 4.9 entered stretch, and their details follow:

ami-6d017002	ap-south-1
ami-cc5540a8	eu-west-2
ami-43401925	eu-west-1
ami-870edfe9	ap-northeast-2
ami-812266e6	ap-northeast-1
ami-932e4aff	sa-east-1
ami-34ce7350	ca-central-1
ami-9f6dd8fc	ap-southeast-1
ami-829295e1	ap-southeast-2
ami-42448a2d	eu-central-1
ami-98c9348e	us-east-1
ami-57361332	us-east-2
ami-03386563	us-west-1
ami-7a27991a	us-west-2

As with the current jessie images, these use a default username of 'admin', with access controlled by the ssh key named in the ec2 run-instances invocation. They're intended to provide a reasonably complete Debian environment without too much bloat. IPv6 addressing should be supported in an appropriately configured VPC environment. These images were build using Thomas Lange's FAI, which has been used for over 15 years for provisioning all sorts of server, workstation, and VM systems, but which only recently was adapted for use generating cloud disk images. It has proven to be well suited to this task though, and image creation is straightforward and flexible. I'll describe in a followup post the steps you can follow to create and customize your own AMIs based on our recipes. In the meantime, please do test these images! You can submit bug reports to the cloud.debian.org metapackage, and feedback is welcome via the debian-cloud mailing list or #debian-cloud on IRC.