I just tested with a fresh install of 19.04 (booted up with nomodeset and installed). After installation I confirmed I was running 5.0.0-11.12, but the laptop panel link training issue is still present (Dell XPS 9575) causing a black screen on boot. The only way to boot is with nomodeset as a kernel boot parameter.
Note: as a side issue it was virtually impossible to bring up the grub menu now in 19.04 (I think because the timeout is set to zero). I had to make sure to chroot into the newly installed system (after installing) and then edit the /boot/grub/grub.cfg file and manually edit the timeout value. I thought that the this Ubuntu bug was referring to this bug (REGRESSION: black screen with linux 5.0 when starting X) https://bugs.freedesktop.org/show_bug.cgi?id=109959), but perhaps it's referencing another issue entirely? Not sure, but either way the failed link training bug still appears to be present with 5.0.0-11.12 causing black screens on bootups with certain laptop panels. Reading through that thread on bugs.freedesktop.org, Intel realized the problem was caused by certain laptop panels not reporting their specifications correctly (Dell XPS systems appear affected, but other laptops will most likely also be affected), so the code they added to optimize the link (fast and narrow vs. slow and wide) would cause certain laptop panels to never display anything with modesetting. Towards the end of the thread to posted a 5.0 backport patch which completely removes the link optimizations, https://patchwork.freedesktop.org/patch/296411/. Based on the Ubuntu kernel changelog I'm not sure exactly what patch was reverted. My guess is it's for another issue entirely. I'll probably try to compile the Ubuntu kernel with their the freedesktop.org backport patch applied and report back. I can also post my dmeg here for reference. ** Bug watch added: freedesktop.org Bugzilla #109959 https://bugs.freedesktop.org/show_bug.cgi?id=109959 -- 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/1821820 Title: Cannot boot or install - have to use nomodeset Status in linux package in Ubuntu: Fix Released Status in xorg-server package in Ubuntu: Fix Committed Bug description: On this 19.04 beta I have to use nomodeset to boot & install Ubuntu Budgie. This is different behaviour from 18.04 and 18.10 where it booted and installed just fine without nomodeset. Without nomodeset, grub/efi disappears, and after a while a solid rather than blinking cursor on a black screen is seen. It does not boot into a live session, nor displays the ubiquity window ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: xserver-xorg-video-intel 2:2.99.917+git20180925-2 ProcVersionSignature: Ubuntu 5.0.0-7.8-generic 5.0.0 Uname: Linux 5.0.0-7-generic x86_64 ApportVersion: 2.20.10-0ubuntu23 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompositorRunning: None CurrentDesktop: Budgie:GNOME Date: Tue Mar 26 23:40:49 2019 DistUpgraded: Fresh install DistroCodename: disco DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller [8086:22b1] (rev 21) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller [103c:80bf] InstallationDate: Installed on 2019-03-26 (0 days ago) InstallationMedia: Ubuntu-Budgie 19.04 "Disco Dingo" - Alpha amd64 (20190326.1) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 0a5c:216d Broadcom Corp. BCM43142A0 Bluetooth 4.0 Bus 001 Device 003: ID 05c8:022a Cheng Uei Precision Industry Co., Ltd (Foxlink) Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: HP HP Notebook ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-7-generic root=UUID=62ab7c7b-50c8-4719-98c6-55991179ff20 ro nomodeset quiet splash SourcePackage: xserver-xorg-video-intel UpgradeStatus: No upgrade log present (probably fresh install) XorgLogOld: dmi.bios.date: 02/15/2016 dmi.bios.vendor: Insyde dmi.bios.version: F.1F dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: 80BF dmi.board.vendor: HP dmi.board.version: 95.16 dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsyde:bvrF.1F:bd02/15/2016:svnHP:pnHPNotebook:pvr:rvnHP:rn80BF:rvr95.16:cvnHP:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV G=N L=CON B=HP dmi.product.name: HP Notebook dmi.product.sku: N9S73EA#ABU dmi.sys.vendor: HP version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.97-1 version.libgl1-mesa-dri: libgl1-mesa-dri 19.0.0-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.4-1ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20180925-2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821820/+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
