@Daniel, sorry, I think I created the confusion there by (re)using your bug to request for that kernel option to be enabled, that was needed but doesn't seem enough. The kernel change is right though so thanks kernel team to get that uploaded!
-- 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/1836858 Title: i915: Display flickers (monitor loses signal briefly) during "flickerfree" boot, while showing the BIOS logo on a black background Status in linux package in Ubuntu: Confirmed Bug description: I am trying flickerfree boot in 19.10 [1], but find it actually flickers part way through: 1. BIOS logo on a black background. 2. Display mode resets, no image on a black background briefly. 3. BIOS logo on a black background. The flicker occurs seemingly during kernel startup since my peripherals are lit up before the problem occurs. Suspecting this might be related to FB handover: [ 2.751028] fb0: switching to inteldrmfb from EFI VGA I tried disabling that with a big hammer: i915.modeset=0 so it stays in efifb, and that works -- no more flickering, providing I don't let i915 take over the framebuffer. [1] https://discourse.ubuntu.com/t/testing-flickerfree-boot/11854 ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: linux-image-5.2.0-8-generic 5.2.0-8.9 ProcVersionSignature: Ubuntu 5.2.0-8.9-generic 5.2.0 Uname: Linux 5.2.0-8-generic x86_64 ApportVersion: 2.20.11-0ubuntu5 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Wed Jul 17 16:34:36 2019 InstallationDate: Installed on 2019-05-02 (76 days ago) InstallationMedia: Ubuntu 19.10 "Eoan EANIMAL" - Alpha amd64 (20190501) MachineType: LENOVO 10M7CTO1WW ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.2.0-8-generic root=UUID=9bfb5f01-bdd4-4854-bfce-1c28e2f2f3bc ro quiet splash i915.fastboot=1 vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-5.2.0-8-generic N/A linux-backports-modules-5.2.0-8-generic N/A linux-firmware 1.180 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/06/2018 dmi.bios.vendor: LENOVO dmi.bios.version: M16KT47A dmi.board.name: 3102 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN 3259627060530 dmi.chassis.type: 3 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrM16KT47A:bd02/06/2018:svnLENOVO:pn10M7CTO1WW:pvrThinkCentreM710s:rvnLENOVO:rn3102:rvrSDK0J40709WIN3259627060530:cvnLENOVO:ct3:cvrNone: dmi.product.family: ThinkCentre M710s dmi.product.name: 10M7CTO1WW dmi.product.sku: LENOVO_MT_10M7_BU_Think_FM_ThinkCentre M710s dmi.product.version: ThinkCentre M710s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1836858/+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
