Hey, I just read your article about that "issue" and you answered all my questions: - it used to work properly before - it works on windows 😅 I don't understand what you mean by "daisy chaining" the monitors but if I can provide you more informations about it: - My main monitor (the odyssey G9 49") has two DP => one directly plugged onto my personal computer, and the other one plugged onto a Dock station ( https://www.amazon.fr/dp/B0CR6J2HCK?ref=ppx_yo2ov_dt_b_fed_asin_title), plugged onto my professional laptop's USB-C (as stated in your article) - My secondary monitor (a classic 24") has one HDMI port => plugged onto a KVM switch, plugged onto my personal computer, and the other one also plugged onto the KVM switch, plugged onto the laptop
=> I don't face any issue with the hdmi (therefore I have no issues with the KVM switch) => The DP cable is of good quality I think. It's this one : https://www.amazon.fr/dp/B0CBML7QQB?ref=ppx_yo2ov_dt_b_fed_asin_title => The only ones left are the laptop itself OR the Dock station. What do you think? I know my dock station is not of the best quality but is it really that bad? I got everything you said in your article but that's still a fact that it used to work for months and now it doesn't + I have so many issues with displays with ubuntu (like I had to switch back to xorg instead of wayland due to screen sharing issues) so it just felt """obvious""" for me that the software was the problem. On Mon, Apr 7, 2025 at 10:45 AM Daniel van Vugt <[email protected]> wrote: > It looks like you might be daisy chaining the two external monitors(?). > So if you can't easily get new cabling then just plugging in one monitor > at a time would be the next best thing to try. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/2106371 > > Title: > 32:9 resolution missing > > Status in Ubuntu: > Invalid > > Bug description: > From time to time, my screen monitor resolution disappears and I end > up with a very bugy display (flicking) or forced to use a completely > flatten 16:9 one on my ultra wide monitor (samsung odyssey G9) > > ProblemType: Bug > DistroRelease: Ubuntu 24.04 > Package: xorg 1:7.7+23ubuntu3 > ProcVersionSignature: Ubuntu 6.11.0-21.21~24.04.1-generic 6.11.11 > Uname: Linux 6.11.0-21-generic x86_64 > ApportVersion: 2.28.1-0ubuntu3.5 > Architecture: amd64 > BootLog: Error: [Errno 13] Permission non accordée: '/var/log/boot.log' > CasperMD5CheckResult: pass > CompositorRunning: None > CurrentDesktop: ubuntu:GNOME > Date: Mon Apr 7 10:14:03 2025 > DistUpgraded: Fresh install > DistroCodename: noble > DistroVariant: ubuntu > ExtraDebuggingInterest: Yes, including running git bisection searches > GraphicsCard: > Intel Corporation Alder Lake-UP3 GT2 [Iris Xe Graphics] [8086:46a8] > (rev 0c) (prog-if 00 [VGA controller]) > Subsystem: Hewlett-Packard Company Alder Lake-UP3 GT2 [Iris Xe > Graphics] [103c:8aa1] > InstallationDate: Installed on 2024-09-26 (193 days ago) > InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 > (20240424) > MachineType: HP HP ProBook 450 15.6 inch G9 Notebook PC > ProcEnviron: > LANG=fr_FR.UTF-8 > PATH=(custom, no user) > SHELL=/bin/bash > TERM=xterm-256color > XDG_RUNTIME_DIR=<set> > ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.11.0-21-generic > root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash vt.handoff=7 > SourcePackage: xorg > UpgradeStatus: No upgrade log present (probably fresh install) > dmi.bios.date: 05/10/2024 > dmi.bios.release: 11.4 > dmi.bios.vendor: HP > dmi.bios.version: U85 Ver. 01.11.04 > dmi.board.name: 8AA1 > dmi.board.vendor: HP > dmi.board.version: KBC Version 21.6B.00 > dmi.chassis.type: 10 > dmi.chassis.vendor: HP > dmi.ec.firmware.release: 33.107 > dmi.modalias: > dmi:bvnHP:bvrU85Ver.01.11.04:bd05/10/2024:br11.4:efr33.107:svnHP:pnHPProBook45015.6inchG9NotebookPC:pvrSBKPF:rvnHP:rn8AA1:rvrKBCVersion21.6B.00:cvnHP:ct10:cvr:sku6A284EA#ABF: > dmi.product.family: 103C_5336AN HP ProBook > dmi.product.name: HP ProBook 450 15.6 inch G9 Notebook PC > dmi.product.sku: 6A284EA#ABF > dmi.product.version: SBKPF > dmi.sys.vendor: HP > version.compiz: compiz N/A > version.libdrm2: libdrm2 2.4.122-1~ubuntu0.24.04.1 > version.libgl1-mesa-dri: libgl1-mesa-dri 24.2.8-1ubuntu1~24.04.1 > version.libgl1-mesa-glx: libgl1-mesa-glx N/A > version.xserver-xorg-core: xserver-xorg-core 2:21.1.12-1ubuntu1.3 > version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A > version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:22.0.0-1build1 > version.xserver-xorg-video-intel: xserver-xorg-video-intel > 2:2.99.917+git20210115-1build1 > version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau > 1:1.0.17-2build1 > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+bug/2106371/+subscriptions > > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2106371 Title: 32:9 resolution missing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/2106371/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
