Garbled display with kernels 5.15 and 5.14
11-06-2021, 02:38 AM
(This post was last modified: 11-06-2021, 02:39 AM by schwarzwieweiss.)
After a lot of kernel reconfiguration I now have a kernel 5.14.9 that works most of the time. Rebooting usually results in a garbled display, cold boot usually works fine (i.e. the display works perfectly).
I vaguely remember reading reports that rebooting result in display issues. However, I have never experienced this with kernel 5.12.12 (and also not the few times I rebooted with kernel 5.12.19, which I have built while trying to figure out the display issue).
I now also have a kernel 5.14.16, which I have build with the same config as the (mostly) working kernel 5.14.9. But this kernel 5.14.16 has so far always produced a garbled display. On reboots as well as on cold boots.
During testing I had the impression that the issue was in parts caused by USB and HID configuration of the kernel (switching three CONFIGs from module to builtin changed the display behaviour from working to garbled). I have, however not tested this properly.
I'll now try to find which kernel version from 5.14.9 to 5.14.16 is the one that "breaks" with my configuration.
I vaguely remember reading reports that rebooting result in display issues. However, I have never experienced this with kernel 5.12.12 (and also not the few times I rebooted with kernel 5.12.19, which I have built while trying to figure out the display issue).
I now also have a kernel 5.14.16, which I have build with the same config as the (mostly) working kernel 5.14.9. But this kernel 5.14.16 has so far always produced a garbled display. On reboots as well as on cold boots.
During testing I had the impression that the issue was in parts caused by USB and HID configuration of the kernel (switching three CONFIGs from module to builtin changed the display behaviour from working to garbled). I have, however not tested this properly.
I'll now try to find which kernel version from 5.14.9 to 5.14.16 is the one that "breaks" with my configuration.
