>> Should this fix the flickering issue? I'm happy to test it out. > > It will fix a colored flickering;
My flickering has mostly actually usually been white - not colored (though I was seeing the colored flickering lots before I switched off of Wayland, which crashed too often with multiple monitors to be usable). I see that the kernel is available in -proposed via rmadison, but I'm struggling to install it. I added the -proposed pocket for main to my /etc/apt/sources.list and updated my cache, but an `apt upgrade` didn't try to upgrade to the new kernel. Am I missing something to get the proposed kernel? > but not the white screen (if that is > what you're observing). It also fixes issues with suspend/resume that > were present in earlier 6.8-rc kernels but fixed by the final version. I've seen the white screen and suspend/resume issues as well. >> I'm curious about the implications of the two workarounds presented. I see that UMA_Game_Optimized will reserve some system ram for the GPU, which I don't have any issues with if there is some benefit. Will this use scatter/gather and therefore perform better as a result? > > If you use the BIOS option yes it will carve out more memory for VRAM use. S/G is still used, but GTT memory is less likely to be accessed when you have more VRAM. If you turn off S/G then GTT will NEVER be used. It sounds like GTT access is what causes this issue, and that using the bios option won't guarantee that it will never happen. Is that correct? > The potential negative implication for the BIOS option is more RAM being used for GPU that can't be for anything else. > The potential negative implications of turning off S/G in the driver are that the driver may run out of memory in some situations that require a lot of VRAM such as multiple 4k monitor docking. Good to know, thanks for the details! > FWIW - I have a FW13 AMD and I've never seen this white screen problem myself. I don't know if it is tied to RAM vendor, RAM size, or a BIOS issue. My educated guess is it's actually a BIOS issue and it might be properly fixed when FW upgrades to the next BIOS. Interesting. If there's any extra info (or testing) I can provide to help with debugging/fixing this issue, please let me know. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2056445 Title: external monitors flash white with every interrupt Status in Linux: New Status in linux package in Ubuntu: Triaged Bug description: an interesting amdgpu issue: I currently have two external monitors, and only one will display the desktop at a time - the other is completely white. The interesting thing is that with each interrupt that the kernel receives from keyboard / mouse, the screens will flip which one is visible. With my monitors positioned above and to the left of the laptop's built-in display, the flashing monitors feel akin to attending an electronic light show, or perhaps a display of fireworks - the monitors flip visibility with each keypress. ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: linux-image-6.8.0-11-generic 6.8.0-11.11 ProcVersionSignature: Ubuntu 6.8.0-11.11-generic 6.8.0-rc4 Uname: Linux 6.8.0-11-generic x86_64 NonfreeKernelModules: zfs ApportVersion: 2.28.0-0ubuntu1 Architecture: amd64 CRDA: N/A CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Thu Mar 7 05:23:23 2024 InstallationDate: Installed on 2024-02-02 (34 days ago) InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Daily amd64 (20240123) MachineType: Framework Laptop 13 (AMD Ryzen 7040Series) ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-11-generic root=UUID=8de457ce-abc8-47cf-a43f-c13183977aa5 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-6.8.0-11-generic N/A linux-backports-modules-6.8.0-11-generic N/A linux-firmware 20240202.git36777504-0ubuntu1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/17/2023 dmi.bios.release: 3.3 dmi.bios.vendor: INSYDE Corp. dmi.bios.version: 03.03 dmi.board.asset.tag: * dmi.board.name: FRANMDCP07 dmi.board.vendor: Framework dmi.board.version: A7 dmi.chassis.asset.tag: FRANDGCPA735010072 dmi.chassis.type: 10 dmi.chassis.vendor: Framework dmi.chassis.version: A7 dmi.modalias: dmi:bvnINSYDECorp.:bvr03.03:bd10/17/2023:br3.3:svnFramework:pnLaptop13(AMDRyzen7040Series):pvrA7:rvnFramework:rnFRANMDCP07:rvrA7:cvnFramework:ct10:cvrA7:skuFRANDGCP07: dmi.product.family: Laptop dmi.product.name: Laptop 13 (AMD Ryzen 7040Series) dmi.product.sku: FRANDGCP07 dmi.product.version: A7 dmi.sys.vendor: Framework To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/2056445/+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
