[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Changed in: xorg-server Status: Unknown => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
This should also fix the problem for some people in Wayland sessions: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1834 It is in mutter release 40.1 and future release 3.38.5. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
I just solved my 30bit problem with an Displayport to HDMI adapter[1]. Now the screens operate at 4k 60Hz 24bits in Linux and no more screen corruption. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
I came across this bug because of my problem which I described in https://askubuntu.com/questions/1314639/weird-graphics-artifacts- monitor-off-with-ubuntu-20-04-and-nvidia-rtx-5000/1343876#1343876 In my case the Dell monitors tell, they can support 30bit. I came to the conclusion, that the dockingstation's Displayports cannot handle 30bit which leads to strange screen artifacts. However, the HDMI port of the dockingstation outputs 24bits and I have no screen corruption, connecting them directly to laptop is also no problem. In Windows the output is limited at 24bits and the output is reliable. xrandr with "max bpc" 8" is not working me and brings strange errors. Is there any other way to tell Linux system to limit to 24bits? Even before the Desktop appears the console has already switched to 30 bit (according to Monitor OSD info) without any EDID hacking? The Laptop is used daily across different dockingstations with different monitors (Home/Work) System config: - Dell Precision 15" 7540, Xeon E-2286M@2.4GHz, 128 GB ECC RAM, NVIDIA Quadro RTX 5000 16GB VRAM - Dockingstations at Home and offices: WD19DC - Dockingstation 1 WD19DC: 2xDell 43' U4320Q - Dockingstation 2 WD19DC: 2xDellxU3818DW, 37.5" + Laptopdisplay ** Attachment added: "Edid of Dell 43' U4320Q" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1890772/+attachment/5502614/+files/edid_U4320Q_Linux.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
Sounds like a plan, if it works. Just patch the kernel to choose a more sane default. ** Changed in: mutter (Ubuntu) Status: New => Invalid ** Changed in: mutter (Ubuntu) Status: Invalid => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
apparently fixed by the series ending at https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=181567aa9f0d297804f1ea5d3ff4ba4518e05f2c included in 5.10-rc1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Changed in: xorg-server (Ubuntu) Status: Triaged => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Changed in: oem-priority Importance: High => Critical -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
Full URL: https://github.com/vsyrjala/linux/tree/dp_downstream_ports_6 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
Intel GFX dev has a branch that works: git://github.com/vsyrjala/linux.git dp_downstream_ports_6 Will backport the branch once it hits upstream. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
I mean only EDID version 1.4 and later advertises depth, so use that but default to 8 bpc: Set bpc to 8. if ((EDID >= 1.4) && (a depth is advertised in byte 20 bits 6-4)) then Set bpc to the depth advertised in the EDID. endif So for this bug it would stay with bpc=8, because the EDID is only version 1.3 and does not provide any depth info. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
Hello Denial, Do you mean if the monitor EDID < 1.4, set max bpc to 8 in kernel directly? Do I understand it correctly? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
Silly question: Why not just default to 8 bpc and then only increase it to maximum 10/12/14/16 bpc if byte 20, bits 6-4 say that deep colour is supported by the monitor? https://en.wikipedia.org/wiki/Extended_Display_Identification_Data#Structure,_version_1.4 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
... because the EDID this bug is about (comment #23) is version 1.3. So it would get the default 8 bpc. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Also affects: hwe-next Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
Upstream is also working on the same kind of issue: https://gitlab.gnome.org/GNOME/mutter/-/issues/1391 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
reply to #39, yes it's a trade off that we don't either want user get darkscreen when then randomly plug display port for case like #38 or user get lower bpc on their working display port. So far, there seems no solid way to make sure both requirement. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
according to #40 and conversation on mattermost with Kai-Heng. HWE is planning to add quirk for the faulty dongles so that the dark screen during boot time[1] can be fixed. [1] https://gitlab.freedesktop.org/drm/intel/-/issues/1890 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #1391 https://gitlab.gnome.org/GNOME/mutter/-/issues/1391 ** Also affects: mutter via https://gitlab.gnome.org/GNOME/mutter/-/issues/1391 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
This is a kernel bug so not sure if it's wise to fix it from userspace... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
My concern is that you might be taking functionality (deep/wide colour) away from people for whom it works. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
I afraid we can not just trust (EDID_version >= 1.4 && EDID_supports_10bit). Because this issue caused by any problematic component in the middle of pipeline. To ensure the compatibility, better to just defautly set bpc=8. Think of one scenario, a speaker get his Ubuntu machine onto stage, plug the HDMI or DP projector which works well on latest speaker who is using Windows machine. Then, he get dark screen or audio function lost I guess the Ubuntu user might not aware it's caused by bpc. The default behavior should offer better user experience. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Bug watch added: gitlab.freedesktop.org/xorg/xserver/-/issues #1066 https://gitlab.freedesktop.org/xorg/xserver/-/issues/1066 ** Also affects: xorg-server via https://gitlab.freedesktop.org/xorg/xserver/-/issues/1066 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Project changed: xorg-server => gnome-control-center -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Bug watch added: gitlab.gnome.org/GNOME/gnome-control-center/-/issues #1108 https://gitlab.gnome.org/GNOME/gnome-control-center/-/issues/1108 ** Also affects: xorg-server via https://gitlab.gnome.org/GNOME/gnome-control-center/-/issues/1108 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
I guess my only request is that: if (EDID_version > 1.4 && EDID_supports_10bit) then don't restrict "max bpc" endif -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
I guess my only request is that: if (EDID_version >= 1.4 && EDID_supports_10bit) then don't restrict "max bpc" endif ** Also affects: linux via https://gitlab.freedesktop.org/drm/intel/-/issues/1890 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
Thanks for understanding. There's an upstream bug discussing this similar issue, we can follow their effort there. https://gitlab.freedesktop.org/drm/intel/-/issues/1890 ** Bug watch added: gitlab.freedesktop.org/drm/intel/-/issues #1890 https://gitlab.freedesktop.org/drm/intel/-/issues/1890 ** Description changed: 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. + Would like to open this bug to open discussion for enhancing user + experience. + + existed upstream bug: + - https://gitlab.freedesktop.org/drm/intel/-/issues/1890 + --- 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 ** Changed in: oem-priority Assignee: (unassigned) => Kai-Chuan Hsieh (kchsieh) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
No problem. It's not up to me anyway... Long term, to get the GUI work done you will need to request enhancements in both of these projects: https://gitlab.gnome.org/GNOME/gnome-control-center/-/issues https://gitlab.gnome.org/GNOME/mutter/-/issues Short term, to get the default changed you will need to request an enhancement here: https://gitlab.freedesktop.org/xorg/xserver/-/issues When done, please tell us the new issue IDs. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
I think different from #32. To adding a GUI configure bpc is a long-term plan. Before that,the default behavior should be designed to get the best user experience. As we all know, there're lot of hardware components on the pipline of display path(e.g. socket, converter, dongle, cable, monitor) With any lower quality component on the pipeline, dark screen or function lost is not acceptable. It should be better to provide lower default bpc than dark user's screen. Afterall, user can adjust the bpc by command in short-term or by UI in long-term plan. But if we just dark user's screen, user mostly thinks the hardware is broken or Ubuntu provides poor compatibility(if they compare the same component to Windows). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Changed in: oem-priority Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Tags added: originate-from-1887915 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
Realistically I do not expect this bug to be fixed. Because we don't want to lower the default from 10bpc when the rest of us are trying to enable 10bpc in more cases, and adding a GUI to make it configurable is a multi-month effort because multiple projects would be involved there. But if you want to get the ball rolling on a GUI then I suggest requesting it at: https://gitlab.gnome.org/GNOME/gnome-control-center/-/issues This bug *might* be fixed without a GUI if some kind of error check and fallback can be automated in the modesetting code. For Xorg sessions that's in the 'xorg-server' project and for Wayland sessions that's the 'mutter' project. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Tags added: oem-priority originate-from-1886778 somerville -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1890772] Re: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8
** Summary changed: - Some external 4K monitor is not working properly + No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1890772/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
