Bug 111412 - 4k 60hz unavailable RX 560 over HDMI
Summary: 4k 60hz unavailable RX 560 over HDMI
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/AMDgpu (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Default DRI bug account
QA Contact:
Depends on:
Reported: 2019-08-16 21:37 UTC by Alfie Day
Modified: 2019-11-19 09:38 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

xorg log (34.42 KB, text/x-log)
2019-08-16 21:37 UTC, Alfie Day
no flags Details
lspci (6.23 KB, text/plain)
2019-08-16 22:03 UTC, Alfie Day
no flags Details

Description Alfie Day 2019-08-16 21:37:23 UTC
Created attachment 145078 [details]
xorg log


My RX 560 won't do 4k 60hz over HDMI. I have tested the cable/display with a different PC (that has a 1080Ti) and it works fine, so I can confirm that both the cable and the TV are capable of displaying a 4k 60hz signal. I have also tested with a monitor that is capable of doing 4k 60hz over HDMI.

xrandr only shows 30hz as an option on both the TV and the monitor.
Comment 1 Alfie Day 2019-08-16 21:39:50 UTC
Someone on IRC said I should mention I was able to achieve 4k 60hz with a DisplayPort cable to the monitor (sadly this doesn't get me 4k 60hz on my TV, which only has HDMI)
Comment 2 Alfie Day 2019-08-16 21:58:44 UTC
trek00 from IRC found this bug report: https://bugs.freedesktop.org/show_bug.cgi?id=104412#c14

which mentions running these commands, which seems to work and enable 4k60 over HDMI.

xrandr --newmode "mymode" 594  3840 4016 4104 4400  2160 2168 2178 2250 +hsync +vsync
xrandr --addmode HDMI-A-0 mymode
xrandr --output HDMI-A-0 --mode mymode
Comment 3 Alfie Day 2019-08-16 22:03:37 UTC
Created attachment 145079 [details]
Comment 4 Martin Peres 2019-11-19 09:38:46 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/887.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.