Bug 201585
| Summary: | 144Hz 2560x1440 no longer works (caps at 120Hz) | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Dan Acristinii (dan) |
| Component: | Video(DRI - non Intel) | Assignee: | drivers_video-dri |
| Status: | NEW --- | ||
| Severity: | normal | CC: | alex, awesomedonkey, dan, nicholas.kazlauskas |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 4.18 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
dmesg.log on 4.18
144Hz working dmesg on 4.17.19 4.18 with drm.debug=4 applied patch to amd-staging-drm-next |
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Please attach a full dmesg log as well as an xorg log if applicable. for which kernel version, 4.18 or 4.19? The kernel you're experiencing the issue on, 4.18. It might be worth trying 4.19 to see if you can still reproduce the issue there, however. Created attachment 279285 [details]
dmesg.log on 4.18
The issue persists on 4.19 Created attachment 279287 [details]
144Hz working dmesg on 4.17.19
It may also help to have a dmesg log for 4.18 with drm.debug=4 as part of your bootline. Thanks for all the logs. Created attachment 279289 [details]
4.18 with drm.debug=4
I think I added it in the right way
These patches should fix your issue: https://patchwork.freedesktop.org/series/52164/ (In reply to Nicholas Kazlauskas from comment #9) > These patches should fix your issue: > > https://patchwork.freedesktop.org/series/52164/ I suppose I should mention that these are for amd-staging-drm-next, they probably won't cleanly apply on Linus' tree. Created attachment 279377 [details]
applied patch to amd-staging-drm-next
(In reply to Nicholas Kazlauskas from comment #10) > (In reply to Nicholas Kazlauskas from comment #9) > > These patches should fix your issue: > > > > https://patchwork.freedesktop.org/series/52164/ > > I suppose I should mention that these are for amd-staging-drm-next, they > probably won't cleanly apply on Linus' tree. I would like to mention that revision 2 of the patch is incompatible with amd-staging-drm-next (In reply to Dan Acristinii from comment #12) > (In reply to Nicholas Kazlauskas from comment #10) > > (In reply to Nicholas Kazlauskas from comment #9) > > > These patches should fix your issue: > > > > > > https://patchwork.freedesktop.org/series/52164/ > > > > I suppose I should mention that these are for amd-staging-drm-next, they > > probably won't cleanly apply on Linus' tree. > > I would like to mention that revision 2 of the patch is incompatible with > amd-staging-drm-next Are you on the amd-staging-drm-next branch? ie. git checkout --track origin/amd-staging-drm-next Also experiencing this on AMD Vega 56 on 4.20. |
> Using the default driver on Ubuntu 18.10 starting from the 4.18 kernel and > up, results in the maximum frame rate being limited to 120Hz at 2560x1440. > Downgrading to 4.17.19 increases it back to 144Hz. sudo lshw -c video, *-display description: VGA compatible controller product: Vega 10 XT [Radeon RX Vega 64] vendor: Advanced Micro Devices, Inc. [AMD/ATI] physical id: 0 bus info: pci@0000:28:00.0 version: c1 width: 64 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom configuration: driver=amdgpu latency=0 resources: irq:70 memory:e0000000-efffffff memory:f0000000-f01fffff ioport:e000(size=256) memory:fe600000-fe67ffff memory:fe680000-fe69ffff