I'm not sure this is a Linux problem. It may be that the panel is reporting bad EDID data. I haven't investigated enough to say for sure. In any case none of the more recent Linux releases fixed the problem in my tests. Also no other open source OSs were able to deal with the onboard LCD panel either. (That may have changed since I tested.)
If you were interested, you might be able to patch the firmware on the onboard panel to provide different EDID information. I looked into doing this and there are some tutorials out there. However, it's possible you could do something wrong and end up worse than you were before. If you learn something new, please post it here. In particular if you find some open source OS that can configure this display properly at full resolution without resorting to forcing EDID information please say so here. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1821533 Title: drm fails to accept edid version 2.4 Status in linux-hwe package in Ubuntu: Confirmed Status in xorg-server package in Ubuntu: Confirmed Bug description: Booting very new laptop hardware (ASUS Zenbook UX431FA) from 18.04 usb install (also 18.10, also 19.04 daily) leads to black screen. Adding "nomodeset" to kernel boot parameter gives 800x600 video only and permits installing OS to disk. Applying updates and hardware enablement packages does not solve problem: the system will still only boot with nomodeset kernel option, and X is limited to using fbdev module at 800x600 resolution. The "modesetting" driver appears to be loaded and then unloaded during X startup. Trying to force intel module from xserver-xorg-video-intel by setting up 20-intel.conf file in /usr/share/X11/xorg.conf.d/ does not help. The PCI id for the graphics device appears to be 3ea0 and the place where that might be relevant is the i915 module. This problem occurs with every other Linux release I have tried including Fedora 29, Elementary OS latest, Mint 19.1, Manjaro latest. The one open source OS that I have found where it might be fixed is DragonFlyBSD (see https://bugs.dragonflybsd.org/issues/3167). I have verified that the patch referenced in that bug report does make DragonFlyBSD boot past the video problem which I think is the same problem I experience with every Linux OS I have tried including Ubuntu. guest@guest-ZenBook-UX431FA:~$ lsb_release -rd Description: Ubuntu 18.04.2 LTS Release: 18.04 guest@guest-ZenBook-UX431FA:~$ dpkg -l | grep hwe | egrep "linux|fbdev" ii linux-generic-hwe-18.04 4.18.0.16.66 amd64 Complete Generic Linux kernel and headers ii linux-headers-generic-hwe-18.04 4.18.0.16.66 amd64 Generic Linux kernel headers ii linux-image-generic-hwe-18.04 4.18.0.16.66 amd64 Generic Linux kernel image ii linux-signed-generic-hwe-18.04 4.18.0.16.66 amd64 Complete Signed Generic Linux kernel and headers (dummy transitional package) ii xserver-xorg-video-fbdev-hwe-18.04 1:0.5.0-1ubuntu1~18.04.1 amd64 X.Org X server -- fbdev display driver Expected result: Video at 1920x1080 Actual result: Video limited to 800x600 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xorg 1:7.7+19ubuntu7.1 ProcVersionSignature: Ubuntu 4.18.0-16.17~18.04.1-generic 4.18.20 Uname: Linux 4.18.0-16-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Sun Mar 24 10:36:51 2019 DistUpgraded: Fresh install DistroCodename: bionic DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Intel Corporation Device [8086:3ea0] (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device [1043:17d1] InstallationDate: Installed on 2019-03-24 (0 days ago) InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210) MachineType: ASUSTeK COMPUTER INC. ZenBook UX431FA ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-16-generic root=UUID=e6ae272a-49f0-491b-99b6-2a3785a7679e ro nomodeset vt.handoff=1 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/14/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX431FA.205 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX431FA dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX431FA.205:bd12/14/2018:svnASUSTeKCOMPUTERINC.:pnZenBookUX431FA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX431FA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: ZenBook dmi.product.name: ZenBook UX431FA dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.95-1~18.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.8-0ubuntu0~18.04.2 version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.8-0ubuntu0~18.04.2 version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1821533/+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
