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Bug#1040346: linux-image-6.3.0-2-amd64: AMDGPU only with unusable high resolution available



Control: reassign -1 src:linux 6.3.11-1
Control: tags -1 unreproducible

On Wed, Jul 05, 2023 at 11:31:06AM +0100, Klaus Ethgen wrote:
> > But this is what you want, you want to use the full resolution of the
> > output and scale the output (this is called HiDPI).  If you try to
> > change the resolution to a non-native one, everything gets mushy.
> No, I don't want the full resolution. It is unreadable. I usually use
> 1920x1200 which is exactly 1/4 of the resolution so nothing gets mushy.

So you use full resolution and 200% scaling.

> > What happens if you remove the minimally maintained xorg from the
> > equation and use wayland as output driver, which supports more modern
> > graphics features?
> I never got wayland to work. It seems to be always broken when you use
> something different than gnome. It also does not clearly support network
> protocol.

That's why I asked to check, not to use.

Anyway, I can't reproduce this using amdgpu on:

| % uname -a
| Linux steamhammer 6.3.0-2-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.3.11-1 (2023-07-01) x86_64 GNU/Linux

| % lspci -nn | grep VGA
| 06:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Renoir [1002:1636] (rev c1)

| % cat /sys/class/drm/card0-DP-1/modes | head -n 10
| 3840x2160
| 3840x2160
| 2560x1440
| 1920x1200
| 1920x1080
| 1920x1080
| 1920x1080
| 1600x1200
| 1680x1050
| 1600x900

Bastian

-- 
The sooner our happiness together begins, the longer it will last.
		-- Miramanee, "The Paradise Syndrome", stardate 4842.6


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