BTW now the screen also gets stuck as black-screen when I close my laptop lid, wait some seconds and open it again.
And the functions keys to regulate screen brightness are working no more (I also tried to change brightness with this tool http://ubuntuhandbook.org/index.php/2017/05/install-brightness- controller-utility-in-ubuntu-16-04-higher/ but it had no effect ...) Could this be related to the above described issue? Best Alexander -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/1904474 Title: Black/purple screen after booting Ubuntu Status in gnome-session package in Ubuntu: Incomplete Status in gnome-shell package in Ubuntu: Incomplete Bug description: Hi, I am failing to boot into a freshly installed Ubuntu 18.04.5 LTS on my ThinkPad-T460. When choosing the right bootloader in BIOS I get a dark screen, Ubuntu is not booting (also after 15mins of waiting ...). I first thought my issue would be a *Black/purple screen after you boot Ubuntu for the first time* like over here: https://askubuntu.com/questions/162075/my-computer-boots-to-a-black- screen-what-options-do-i-have-to-fix-it So I added ```ǹomodeset``` in the script executed before booting Ubuntu. Interestingly I was able to boot and then made this change persistent by updating the bootloader. I tried some more times to boot and suddenly it stopped working properly (with same blackscreen as before). I also took a look to the bootscript, ```ǹomodeset``` was present there. Then I played around with some other obscure suggestions like adding ```nouveau.noaccel=1``` instead of ```nomodeset``` and replace ```qiuiet splash``` by ```noapic noacpi nosplash inqpoll```, but nothing gave me a soultion which did not get stuck with black screen of death after some reboots. I am a little bit clueless at the moment, so I have appended the uncompressed logs in ```/var/log```, captured like in https://wiki.ubuntu.com/DebuggingKernelBoot . The files appended are from a boot that got stuck, I have killed my laptop after 10mins of nothing happening. Btw. I have a dual boot with Windows 10, but I do not know if this is relevant for this issue. Best Alexander --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.20 Architecture: amd64 CurrentDesktop: ubuntu:GNOME DisplayManager: gdm3 DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2020-11-16 (1 days ago) InstallationMedia: Ubuntu 18.04.5 LTS "Bionic Beaver" - Release amd64 (20200806.1) Package: gnome-shell 3.28.4-0ubuntu18.04.3 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 5.4.0-53.59~18.04.1-generic 5.4.65 Tags: bionic Uname: Linux 5.4.0-53-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1904474/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
