Bug 203731 - amdgpu wrong refresh rate for hdmi output with deepcolor turned on
Summary: amdgpu wrong refresh rate for hdmi output with deepcolor turned on
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: Video(DRI - non Intel) (show other bugs)
Hardware: All Linux
: P1 high
Assignee: drivers_video-dri
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-05-27 21:16 UTC by Gluzskiy Alexandr
Modified: 2019-06-05 16:28 UTC (History)
1 user (show)

See Also:
Kernel Version: 4.19.45
Subsystem:
Regression: No
Bisected commit-id:

Attachments
xorg server log (12.93 KB, application/gzip)
2019-05-27 21:16 UTC, Gluzskiy Alexandr 		Details
photo (1.62 MB, image/jpeg)
2019-05-27 21:29 UTC, Gluzskiy Alexandr 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Gluzskiy Alexandr 2019-05-27 21:16:11 UTC 
Created attachment 282971 [details]
xorg server log

i have 3 display setup (dvi, dp, hdmi), displays on dp and hdmi are 10bit displays, if i turn on deepcolor option on amdgpu driver, hdmi display got wrong refresh rate (looks too low), display supported 1920x1200@60 mode, in xorg.log we can see what it detected properly, but instead of this display got like 40hz, and turn black with out of range error, i have played a bit with modes, and found what  mode "xrandr --newmode "1920x1200_73.48"  240.00  1920 2064 2264 2608  1200 1203 1209 1254 -hsync +vsync" works, display also warns about out of range mode (58.7hz), but actually works, NOTE: this all happens only if deepcolor driver option is turned on.
Comment 1 Gluzskiy Alexandr 2019-05-27 21:29:25 UTC 
Created attachment 282973 [details]
photo

monitor photo
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