Recent blog posts

Linux group membership change appears to be ignored (7 Mar 2017 - #492346)
If changes to group memberships appear to be ignored on a recent Linux system, even after logging out and then in, the likely reason is that the time between log out and log in was too short, and the user service did not terminate and restart. A system reboot will sort the problem, but could … Continue reading Linux group membership change appears to be ignored →

Mount NextCloud folders (7 Mar 2017 - #492327)
Linux: Windows: TBC Android: Install the official NextCloud Android client. Links:

STM32CubeProgrammer and STM32_Programmer_CLI fail complaining about missing STM32_Prog_DB_0xNNN.xml or 0xNNN.stldr files (6 Mar 2017 - #478267)
This problem can be caused by not reading the correct device ID, in which case the 0xNNN above will be 0x000. Obviously those files do not exist. See solution here. Another reason reason might be that STM32CubeProgrammer and STM32_Programmer_CLI try to use the incorrect (relative) paths. Some versions of the programs relied on using paths … Continue reading STM32CubeProgrammer and STM32_Programmer_CLI fail complaining about missing STM32_Prog_DB_0xNNN.xml or 0xNNN.stldr files →

STM32CubeProgrammer and STM32_Programmer_CLI fail with unknown device ID (6 Mar 2017 - #478267)
Solution: Use SWD with reduced clock speed. Mind you, I have only encountered this problem when trying to program STM32 clones, so an alternative solution may be to only use genuine ST devices purchased from reputable sources.

Colour less pipes (6 Mar 2017 - #478265)
By default less will display colour escape codes directly and will not interpret them. Some programs will only output colour when running in a colour capable terminal; by default a linux pipe is not considered colour capable. We have to tell them explicitly to generate and process colour escape sequences: For further details see askubuntu … Continue reading Colour less pipes →

Zoom function in Calibre e-reader (5 Mar 2017 - #469241)
There does not seem to be one. Control + mouse scroll will adjust the font size, but not the overall scale of the display. This is especially annoying when at the default zoom level some of the text falls outside the the e-reader window: Cumbersome, but at least the text will become readable: CSS to … Continue reading Zoom function in Calibre e-reader →