Created attachment 141995 [details] xrandr output showing the 60hz support After 4.18 didn't have support for 4k@60hz over HDMI, it was refreshing to see it supported in amd-staging-drm-next. Unfortunately, there is currently high pitch audio when using 4k@60 output. Using xrandr to change to any other resolution or refresh rate has fully working audio. I understand Polaris is still very WIP hardware, but I'm willing to test patches or get additional logging to help with this bug.
Created attachment 141996 [details] glxinfo output
Created attachment 141997 [details] Xorg.0.log after booting, changing to 1080@60, changing to 4k@60, then changing back to 1080@60
Created attachment 141998 [details] dmesg after booting, changing to 1080@60, changing to 4k@60, running a game to verify high pitch audio, then changing back to 1080@60
1. Is the high pitch audio loud relative to the rest of the output? 2. If you're using speakers, are they internal to the TV/monitor? 3. Does the high pitch audio also occur during desktop idle?
(In reply to Nicholas Kazlauskas from comment #4) > 1. Is the high pitch audio loud relative to the rest of the output? > 2. If you're using speakers, are they internal to the TV/monitor? > 3. Does the high pitch audio also occur during desktop idle? 1) it's all audio, and is sped up and choppy. It's not just the pitch (took me a bit to realize). 2) Yes. 3) any audio is sped up, no additional sounds. I've found that manually setting with cvt and xrandr modeline doesn't have the issue, but the refresh rate is also 59.976, not 60.0.
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