Bug#1042374: linux-image-6.1.0-0.deb11.9-amd64: The module radeon is unstable, the system reboots often infinitively
Hi, Some details. I have never seen this issue starting after displaying the BIOS screen which is graphic with mouse. Then Debian works fine. Linux Mint Live on a USB key works always fine. It is the same, after a session of Linux Mint Live, I reboot the machine then Debian works fine. I think that the Radeon GPU keeps some settings after the BIOS session or the Linux Mint session and work fine until a poweroff. So i think that the module Radeon (or the firmware) has not the good parameters when it is launched directly by Debian. It is a simple guess. modeset=0 works fine but with a very bad resolution not usable. modeset=1 or auto has this bug since some weeks even I launches startx. This settings has been working well for years with Debian Bullseye. What's strange is that the mouse doesn't work on the next startup after the last not wanted reboot. But the next succeeded reboot after a bad, the mouse works fine. It work as some register does not reset on boot but a poweroff. -- Rpnpif
Bug#1042374: linux-image-6.1.0-0.deb11.9-amd64: The module radeon is unstable, the system reboots often infinitively
After a lot of tests, I have found the culprit of this instability. If I blacklists the radeon and amdgpu module, all works fine but the display resolution is too low. If I enabled again, as soon as the radeon is loaded, the machine reboots. If I blacklist radeon and manually I modprobe radeon, the machine reboots immediately. I can start the machine with radeon one times of 5 with the normal mode or one times of 2 with the maintenance mode. After a reboot after a crash, the usb mouse does not work, but on the second success, the usb mouse works fine. Restarting the machine after a poweroff does never permit a success boot. firmware-amd-graphics 20230515-3 from SID does not fix this issue. lspci [ grep VGA 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Trinity 2 [Radeon HD 7480D] -- Rpnpif
