Thanks for your (once again) detailed answer! Yesterday it worked but this morning is got even worse! I tried what you said: - first plugged the hdmi directly on my laptop which apparently didn't help. Or if I am more explicit: the G9 was well detected and I could select there right resolution (with even more options this time) but I just have a black screen, no matter what and the laptop's integrated display starts flashing... - when I just plug in the G9 itself, it doesn't change anything at all. Still a black screen with integrated display flashing - when I plug back the hdmi, still a black screen and the hdmi works well - when I turn of my own computer under windows, everything works fine
Le mar. 8 avr. 2025, 08:10, Daniel van Vugt <2106...@bugs.launchpad.net> a écrit : > It sounds like the dock and the number of monitors are the two main > issues. > > * Your laptop's USB-C port only supports DP1.4, so is limited to HBR3 > which can drive the Samsung G9 at 120Hz true colour (or 97Hz in deep > colour/HDR) under ideal conditions with a perfect cable, but will have > no additional bandwidth to drive the second monitor (unless you limit > both of them to 60Hz). > > * USB-C docks reduce the signal quality, so expect lower capabilities > than just plugging directly into the laptop. Also I've had bad > experience with Ugreen display cables myself recently. > > Basically I think you need to eliminate one monitor or the dock itself. > It looks like the laptop has a lot of spare bandwidth on its own HDMI > port so I would consider plugging one monitor into that instead. If you > do that then you might be able to keep the dock. > > https://h20195.www2.hp.com/v2/GetPDF.aspx/c08007805.pdf > > https://en.wikipedia.org/wiki/DisplayPort#Resolution_and_refresh_frequency_limits > > https://www.intel.com/content/www/us/en/products/sku/226259/intel-core-i71255u-processor-12m-cache-up-to-4-70-ghz/specifications.html > > -- > 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 Kernel Packages, which is subscribed to linux-hwe-6.11 in Ubuntu. https://bugs.launchpad.net/bugs/2106371 Title: 32:9 resolution missing Status in linux-hwe-6.11 package in Ubuntu: Opinion 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/+source/linux-hwe-6.11/+bug/2106371/+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
