@vanvugt Coming from the other bug report I'm trying to describe my problem:
First of all I don't see purple as I have disabled the purple grub by running chmod -x /etc/grub.d/05_debian_theme Secondly: In Ubuntu 19.10 there is no flicker happening for me, while in Ubuntu 20.04 there is a flicker. Why is that? There must be something in 19.10 that is not part of 20.04. In Ubuntu 20.04 the bios logo appears after grub, then it flickers just before the spinner shortly (during the flicker a white cursor appears on the upper left corner of the screen), you can see this here: https://youtu.be/O_Efd9szFFI during second 6 and second 7 (in reality it's much better noticeable than on the video). Compare this with the boot process of Ubuntu 19.10 where there is not a single flicker: https://youtu.be/KTOz7aOY5iE -- 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/1861470 Title: BIOS logo reappears mid-boot after the purple screen Status in grub2 package in Ubuntu: Confirmed Status in linux package in Ubuntu: Confirmed Status in linux-signed-5.4 package in Ubuntu: Confirmed Bug description: BIOS logo (the ACPI BGRT graphic) reappears mid-boot after the purple screen. This seems to be happening reliably on multiple focal machines: 0. Turn on or reboot the machine. 1. See the BIOS logo. 2. See a blank purple screen (grub) 3. See the BIOS logo again (this bug) 4. See the purple screen with Ubuntu logo (plymouth) 5. See the login screen I believe this is related to ACPI BGRT changes in the kernel. And I guess it wouldn't even need fixing if we just eliminated the blank purple grub screen (step 2)... ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-12-generic 5.4.0-12.15 ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8 Uname: Linux 5.4.0-12-generic x86_64 ApportVersion: 2.20.11-0ubuntu16 Architecture: amd64 Date: Fri Jan 31 11:31:44 2020 InstallationDate: Installed on 2020-01-30 (0 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200124) SourcePackage: linux-signed-5.4 UpgradeStatus: No upgrade log present (probably fresh install) --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu16 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dan 1316 F.... pulseaudio DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-01-30 (0 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200124) MachineType: LENOVO 20KFCTO1WW Package: linux-signed-5.4 ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-12-generic root=UUID=50f3b272-d351-4a2a-9661-d39e9fcf2195 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8 RelatedPackageVersions: linux-restricted-modules-5.4.0-12-generic N/A linux-backports-modules-5.4.0-12-generic N/A linux-firmware 1.185 Tags: focal Uname: Linux 5.4.0-12-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 01/10/2020 dmi.bios.vendor: LENOVO dmi.bios.version: N20ET51W (1.36 ) dmi.board.asset.tag: Not Available dmi.board.name: 20KFCTO1WW dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN20ET51W(1.36):bd01/10/2020:svnLENOVO:pn20KFCTO1WW:pvrThinkPadX280:rvnLENOVO:rn20KFCTO1WW:rvrNotDefined:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad X280 dmi.product.name: 20KFCTO1WW dmi.product.sku: LENOVO_MT_20KF_BU_Think_FM_ThinkPad X280 dmi.product.version: ThinkPad X280 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1861470/+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
