** Summary changed: - eGPU ssetup - internal laptop display not usable + eGPU setup - internal laptop display not usable
-- 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/1895935 Title: eGPU setup - internal laptop display not usable Status in linux package in Ubuntu: New Bug description: I have the following configuration: - Xubuntu 20.04 updated to kernel 5.4.0-47 - Lenovo Thinkpad T480 with Intel i5-7300U and Intel HD Graphics 620 - eGPU via Thunderbolt 3: HP Omen Accelelerator + Nvidia GFX1070 - 2 external monitors connected to the eGPU: 1 DisplayPort + 1 DVI Before the upgrade to kernel 5.4.0-47 I could use all 3 monitors (1 internal + 2 external). Since the upgrade to kernel 5.4.0-47 the internal monitor is not usable anymore. It is not displayed by xrandr --query and remains blank with a small background luminescence Expected to happen: to be able to use all 3 available monitors (2 external + 1 internal) What happens: only the external monitors (the one connected directly to eGPU) are available, the internal monitor remains black but with backlight. lsb_release -rd Description: Ubuntu 20.04.1 LTS Release: 20.04 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.4.0-47-generic 5.4.0-47.51 ProcVersionSignature: Ubuntu 5.4.0-47.51-generic 5.4.55 Uname: Linux 5.4.0-47-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: vlad 1868 F.... pulseaudio /dev/snd/controlC0: vlad 1868 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: XFCE Date: Thu Sep 17 09:18:19 2020 InstallationDate: Installed on 2020-08-29 (18 days ago) InstallationMedia: Xubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: LENOVO 20L6S8LU1W ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-47-generic root=UUID=3792990b-6d8f-4e09-80fa-4fa1a59be11f ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.4.0-47-generic N/A linux-backports-modules-5.4.0-47-generic N/A linux-firmware 1.187.3 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/02/2020 dmi.bios.vendor: LENOVO dmi.bios.version: N24ET59W (1.34 ) dmi.board.asset.tag: Not Available dmi.board.name: 20L6S8LU1W dmi.board.vendor: LENOVO dmi.board.version: SDK0J40697 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN24ET59W(1.34):bd06/02/2020:svnLENOVO:pn20L6S8LU1W:pvrThinkPadT480:rvnLENOVO:rn20L6S8LU1W:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T480 dmi.product.name: 20L6S8LU1W dmi.product.sku: LENOVO_MT_20L6_BU_Think_FM_ThinkPad T480 dmi.product.version: ThinkPad T480 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1895935/+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
