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** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1890772
Title:
Some external 4K monitor is not working properly
Status in OEM Priority Project:
New
Status in linux package in Ubuntu:
Confirmed
Status in mutter package in Ubuntu:
New
Status in xorg-server package in Ubuntu:
Triaged
Bug description:
The bug is originated from,
https://bugs.launchpad.net/somerville/+bug/1887915/
https://bugs.launchpad.net/somerville/+bug/1886778
It has some problem when user connect to external 4K monitor with refresh
rate 60.
The problem can be solved by lower the bpc, or lower the refresh rate.
`xrandr --output DP-3 --set "max bpc" 8`
Would like to open this bug to open discussion for enhancing user experience.
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
DistUpgraded: Fresh install
DistributionChannelDescriptor:
# This is the distribution channel descriptor for the OEM CDs
# For more information see
http://wiki.ubuntu.com/DistributionChannelDescriptor
canonical-oem-somerville-focal-amd64-20200502-85+fossa-samwell-tgl+X42
DistroCodename: focal
DistroRelease: Ubuntu 20.04
DistroVariant: ubuntu
DkmsStatus: nvidia, 440.100, 5.6.0-1021-oem, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation Device [8086:9a49] (rev 01) (prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:09fc]
Subsystem: Dell GP107M [GeForce MX350] [1028:09fc]
InstallationDate: Installed on 2020-08-07 (0 days ago)
InstallationMedia: Ubuntu 20.04 "Focal" - Build amd64 LIVE Binary
20200502-05:58
Package: xorg 1:7.7+19ubuntu14 [origin: unknown]
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.6.0-1021-oem
root=UUID=41be2253-410a-4ef7-a096-4193a58efdbd ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.6.0-1021.21-oem 5.6.19
Tags: third-party-packages focal ubuntu
Uname: Linux 5.6.0-1021-oem x86_64
UnreportableReason: This is not an official Ubuntu package. Please remove any
third party package and try again.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
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