From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 214369] New: Radeon HD5770 incorrect refresh rate via display port
Date: Sat, 11 Sep 2021 17:16:12 +0000 [thread overview]
Message-ID: <bug-214369-2300@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=214369
Bug ID: 214369
Summary: Radeon HD5770 incorrect refresh rate via display port
Product: Drivers
Version: 2.5
Kernel Version: 5.14.2
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - non Intel)
Assignee: drivers_video-dri@kernel-bugs.osdl.org
Reporter: roxmail@list.ru
Regression: No
Created attachment 298751
--> https://bugzilla.kernel.org/attachment.cgi?id=298751&action=edit
dmesg
Monitor connected via display port to radeon hd5770 card.
Mouse cursor and windows movements are choppy, monitor says that video mode are
1920x1080 at 44Hz.
$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
DisplayPort-0 connected primary 1920x1080+0+0 (normal left inverted right x
axis y axis) 600mm x 340mm
1920x1080 60.00*+ 59.94
3840x2160 30.00
2560x1440 59.95
1920x1080_59.94 59.94
1920x1080_59.55 59.53
1920x1080_59.57 59.57
1920x1080_59.56 59.56
1920x1080_59.53 59.53
1600x900 60.00
1280x1024 60.02
1280x800 59.81
1280x720 60.00 59.94
1024x768 60.00
800x600 60.32
720x480 60.00 59.94
640x480 60.00 59.94
HDMI-0 disconnected (normal left inverted right x axis y axis)
DVI-0 disconnected (normal left inverted right x axis y axis)
DVI-1 disconnected (normal left inverted right x axis y axis)
With 2560x1440 refresh rate are 27Hz (from monitor), and there are black screen
while trying to set 3840x2160. I don't know whether it's regression. hdmi and
dvi works as expected (at least with 1920x1080).
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