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The Wi-Fi adapter on my VivoBook 17 has been acting up under Ubuntu 18.04 LTS insofar that at a random point in time, possibly accelerated by power saving features, the Wi-Fi will stop working with suspicious syslog entries: ath10k_pci 0000:03:00.0: failed to wake target for read32 at 0x0003a028: -110 The usual tricks (suspend/resume, reload driver, … Continue reading Resetting a PCI device
If you're a seasoned server administrator then this post will boring beyond oblivion to you; the ingredients: a headless server (no screen, keyboard)years of personal backups on a linux software RAIDa botched system upgradehappy ending The pretext Several years ago I bought an HP Proliant microserver on discount and set up a NAS with Ubuntu … Continue reading A crazy server recovery
In ubuntu 12.04 VLC runs out of sync when pausing a video. First, when pausing the video, sound will continue playing for a couple of seconds. Then when resuming the video, it will lag behind but eventually resync after several seconds. Somehow I lived with this bug for a while, unnecessarily as it seems as … Continue reading VLC / Ubuntu out of sync sound
Resizing a window in Unity/Ubuntu 12.04 is quite a pain as one needs to target the 1 pixel border of the lower right corner. Fortunately the width can be increased: Edit /usr/share/themes/Ambiance/metacity-1/metacity-theme-1.xml and increase the widths, i.e.: <distance name="left_width" value="8"/> <distance name="right_width" value="8"/> <distance name="bottom_height" value="8"/> Log out and in again.
At some point the physical power button on my file server (ubuntu 12.04) stopped working and I had to do a software shutdown everytime. The solution is to (re) install acpi: sudo apt-get install acpi sudo apt-get install --reinstall acpi-support
It works fine with Chrome and it fails on an Android 2.3 browser - the page is performing an XmlHttpRequest to the server for a resource that just changed for sure and yet it gets back an older version. That's the result of a. the browser assuming a resource is cachable even if no Etag … Continue reading HTTP: The importance of declaring non-cachable resources as such
I'm having for the last month a very bad internet connection which makes it almost impossible to upload files anywhere: drive, facebook or WARs to my toy server. Especially the latter one is really annoying as the SSH connection will really abort with an ugly network error. I suspect a misconfiguration in the TCP/IP settings … Continue reading sshfileuploader: uploading large files over ssh over an unreliable connection
After migrating a software RAID 5 to Ubuntu LTS 12.04, the system wouldn't come up again after rebooting. I believe Chris Siebenmann to splendidly have analysed [1] the problem: a race condition with udev losing the race. His solution is to: Change /usr/share/initramfs-tools/scripts/mdadm-functionsas follows: degraded_arrays() { + udevadm settle mdadm --misc --scan --detail --test >/dev/null … Continue reading mdadm woes
My current project (cat4trad) for the European Parliament, which involves heavily GWT and javascript in bringing a seamless user experience to translators, we frequently run into issues with different browsers. The one I run into today was about a window resize event not being detected by IE8 and IE9. This simple test should always print … Continue reading Internet Explorer, zooming and resize events
For some time now content assist and the command panel have been broken in Eclipse and Ubiquity running under Ubuntu; they wouldn't trigger the pop-up menues when pressing CRTL+Space. The reason is ibus intercepting that key combination and it's just as easily solved [1]: Open gconf-editor. Choose desktop -> ibus -> general -> hotkey. Open … Continue reading CRTL+Space not working in Ubuntu applications
