Bug 218238
| Summary: | AMD Radeon video card does not work in 6.6.4; works fine in 6.6.3 | ||
|---|---|---|---|
| Product: | Linux | Reporter: | Dianne Skoll (dianne) |
| Component: | Kernel | Assignee: | Virtual assignee for kernel bugs (linux-kernel) |
| Status: | RESOLVED ANSWERED | ||
| Severity: | normal | CC: | alexdeucher |
| Priority: | P3 | ||
| Hardware: | IA-64 | ||
| OS: | Linux | ||
| Kernel Version: | Subsystem: | ||
| Regression: | No | Bisected commit-id: | |
| Attachments: |
Kernel config file - Same config used for 6.6.3 and 6.6.4
6.6.3 boot log 6.6.4 boot log Output of dmidecode |
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Created attachment 305555 [details]
6.6.3 boot log
Created attachment 305556 [details]
6.6.4 boot log
Created attachment 305557 [details]
Output of dmidecode
In case it's relevant the boot line is: $ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-6.6.3 root=UUID=a2be5fbe-39ea-450e-add9-6c1b1d76f917 ro quiet systemd.unified_cgroup_hierarchy=0 pcie_aspm=off amdgpu.dc=0 For 6.6.4, same thing but with /boot/vmlinuz-6.6.4. Please report here: https://gitlab.freedesktop.org/drm/amd/-/issues Would be nice if you performed regression testing: https://docs.kernel.org/admin-guide/bug-bisect.html Does remmoving amdgpu.dc=0 from your kernel command line fix the issue? Hi, Removing amdgpu.dc=0 did not help. I'm doing git bisect now and will report back when it finds the bad commit. Regards, Dianne. Ugh, RESOLVED. Sorry. In an attempt to get Blender GPU acceleration working, I'd installed some packages from the closed-source AMD driver repo. Those were the problem. Once I removed them, everything works fine. So in summary: Kernel 6.6.4 is fine. It was user error. Apologies. Regards, Dianne. |
Created attachment 305554 [details] Kernel config file - Same config used for 6.6.3 and 6.6.4 I have a Radeon PRO WX 3200 video card with four monitors attached, running on a TRX40-PRO S motherboard. Everything works fine on kernel 6.6.3. On kernel 6.6.4, only the main monitor displays any video, and it's at an extremely low resolution. I will attach the kernel config file and dmesg output for both kernels as well as dmidecode output.