This still exist. Maybe we can help somehow to resolve it?
Linux insspb-kubuntu 5.4.0-89-generic #100-Ubuntu SMP Fri Sep 24
14:50:10 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
root@insspb-kubuntu:/home/insspb# xrandr
Screen 0: minimum 8 x 8, current 5760 x 2160, maximum 32767 x 32767
HDMI-0 disconnected (normal left inverted right x axis y axis)
eDP-1-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y
axis) 344mm x 194mm
1920x1080 60.02*+ 60.01 59.97 59.96 59.93 48.03
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 60.02
1440x900 59.89
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 60.00
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
800x512 60.17
700x525 59.98
800x450 59.95 59.82
640x512 60.02
720x450 59.89
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98
576x432 60.06
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
DP-1-1 connected 3840x2160+1920+0 (normal left inverted right x axis y axis)
597mm x 336mm
3840x2160 60.00*+ 60.00 50.00 59.94 30.00 25.00 24.00
29.97 23.98 29.98
1920x2160 59.99
2560x1440 59.95
1920x1080 60.00 50.00 59.94
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 59.90
1280x960 60.00
1280x720 60.00 50.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
HDMI-1-1 disconnected (normal left inverted right x axis y axis)
DP-1-2 disconnected (normal left inverted right x axis y axis)
HDMI-1-2 disconnected (normal left inverted right x axis y axis)
DP-1-3 disconnected (normal left inverted right x axis y axis)
HDMI-1-3 disconnected (normal left inverted right x axis y axis)
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-hwe-edge in Ubuntu.
https://bugs.launchpad.net/bugs/1661987
Title:
Wrong colours on some monitors via USB-C to HDMI
Status in Linux:
New
Status in linux-hwe-edge package in Ubuntu:
Confirmed
Bug description:
I installed Ubuntu 16.04.1 on my Dell XPS 13 9360 and I'm experiencing
some issues with external displays.
I bought two adapters from Aukey: USB-C to VGA and USB-C to HDMI
(USB-C is the only port that I can use for video output on my
computer).
USB-C to VGA work flawlessly with all display I tested.
USB-C to HDMI has issues with some displays. Sound works great but
with some displays (such as on 2 24" Samsung TV monitors) colors are
rendered wrong, like if a 16-bit palette is used (this picture posted
by another user gives an idea of the problem:
https://i.stack.imgur.com/KY44f.jpg).
If I connect the display BEFORE turning it on and then turn it on it works
correctly (until any video setting option is changed... then I get weird
colours again).
When I get weird colours if I turn the monitor off and on I get correct
colours (until a change in video mode options).
However on some other displays it works correctly all the time, such
as on a 40" Toshiba TV.
Other users are reporting the same issues with other usb-c to hdmi
adapters / monitors combinations.
The same adapter/monitor combination works flawlessly with Windows 10,
and previously I used the same monitor with Ubuntu on my old computer
(that had HDMI output) with no problems.
I tested some other distros with the same result, so I think it is a
kernel-related bug. I tested latest 4.10 rc6 kernel but the problem is
still there.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.8.0-34-generic 4.8.0-34.36~16.04.1
ProcVersionSignature: Ubuntu 4.8.0-34.36~16.04.1-generic 4.8.11
Uname: Linux 4.8.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Feb 5 17:39:55 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-02-05 (0 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
SourcePackage: linux-hwe-edge
UpgradeStatus: No upgrade log present (probably fresh install)
To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/1661987/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
