I would guess that option exposes DOS-era VGA support, which is still used by operating systems before they boot. While that shouldn't affect the operation of Linux after it has booted, it might, if it changes the default dithering mode on the hardware and Linux doesn't change it after that.
Now I'm guessing too much. -- 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/1852166 Title: [nouveau] Pixel pattern error at 120Hz or 144Hz, but 60Hz works (monitor MSI Optix G24C / model 1462) Status in linux package in Ubuntu: Fix Released Status in xorg-server package in Ubuntu: Fix Released Bug description: The primary monitor, Microstep 24", is capable of 144 Hz refresh rate and I do use that regularly in Windows 10. When I set the rate to anything higher than 60 Hz (120 or 144) I get a wrong pixel pattern. See attached photos. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: xorg 1:7.7+19ubuntu12 ProcVersionSignature: Ubuntu 5.3.0-19.20-generic 5.3.1 Uname: Linux 5.3.0-19-generic x86_64 ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Tue Nov 12 12:06:45 2019 DistUpgraded: 2019-10-23 22:37:24,432 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: eoan DistroVariant: ubuntu DkmsStatus: virtualbox, 6.0.14, 5.3.0-19-generic, x86_64: installed ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: NVIDIA Corporation GP102 [GeForce GTX 1080 Ti] [10de:1b06] (rev a1) (prog-if 00 [VGA controller]) Subsystem: eVga.com. Corp. GP102 [GeForce GTX 1080 Ti] [3842:6390] InstallationDate: Installed on 2010-10-12 (3317 days ago) InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) MachineType: Supermicro X10SRA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-19-generic root=/dev/mapper/root ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to eoan on 2019-10-23 (19 days ago) dmi.bios.date: 06/23/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2.0a dmi.board.asset.tag: Default string dmi.board.name: X10SRA dmi.board.vendor: Supermicro dmi.board.version: 1.01 dmi.chassis.asset.tag: Default string dmi.chassis.type: 17 dmi.chassis.vendor: Supermicro dmi.chassis.version: 0123456789 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2.0a:bd06/23/2016:svnSupermicro:pnX10SRA:pvr0123456789:rvnSupermicro:rnX10SRA:rvr1.01:cvnSupermicro:ct17:cvr0123456789: dmi.product.family: Default string dmi.product.name: X10SRA dmi.product.sku: Default string dmi.product.version: 0123456789 dmi.sys.vendor: Supermicro version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.99-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.1-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 19.2.1-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.20.5+git20191008-0ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.6-1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-1ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20190815-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 xserver.bootTime: Sun May 13 18:05:25 2018 xserver.configfile: default xserver.errors: [drm] Failed to open DRM device for pci:0000:03:00.0: -19 open /dev/dri/card0: No such file or directory open /dev/dri/card0: No such file or directory Screen 0 deleted because of no matching config section. AIGLX: reverting to software rendering xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.19.6-1ubuntu4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852166/+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
