I can confirm that this is caused by the kernel update. When booting 4.17.0-9-generic the screen works correctly.
** Package changed: xorg (Ubuntu) => linux (Ubuntu) -- 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/1791822 Title: Internal display is blank Status in linux package in Ubuntu: Confirmed Bug description: After upgrading all packages and rebooting today, the internal display is blank. An external display works fine. I believe I also ran upgrades on Friday, so it was a fairly recent package. This is a MacBookPro14,3. I believe there was a kernel upgrade, not sure if there was an Xorg upgrade. ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: xorg 1:7.7+19ubuntu8 ProcVersionSignature: Ubuntu 4.18.0-7.8-generic 4.18.5 Uname: Linux 4.18.0-7-generic x86_64 ApportVersion: 2.20.10-0ubuntu9 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Mon Sep 10 16:34:45 2018 DistUpgraded: 2018-09-05 11:35:19,089 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py ([Errno 2] No such file or directory: './xorg_fix_proprietary.py': './xorg_fix_proprietary.py') DistroCodename: cosmic DistroVariant: ubuntu DkmsStatus: applespi, 0.1, 4.17.0-9-generic, x86_64: installed applespi, 0.1, 4.18.0-7-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Baffin [Radeon RX 460/560D / Pro 450/455/460/555/560] [1002:67ef] (rev c7) (prog-if 00 [VGA controller]) Subsystem: Apple Inc. Radeon Pro 555 [106b:017a] InstallationDate: Installed on 2018-09-05 (5 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: Apple Inc. MacBookPro14,3 ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-7-generic root=UUID=666e74b4-e3a0-4a21-ac25-36b7daa2d230 ro quiet splash vt.handoff=1 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to cosmic on 2018-09-05 (5 days ago) dmi.bios.date: 06/26/2018 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBP143.88Z.0178.B00.1806261159 dmi.board.name: Mac-551B86E5744E2388 dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro14,3 dmi.chassis.type: 9 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-551B86E5744E2388 dmi.modalias: dmi:bvnAppleInc.:bvrMBP143.88Z.0178.B00.1806261159:bd06/26/2018:svnAppleInc.:pnMacBookPro14,3:pvr1.0:rvnAppleInc.:rnMac-551B86E5744E2388:rvrMacBookPro14,3:cvnAppleInc.:ct9:cvrMac-551B86E5744E2388: dmi.product.family: MacBook Pro dmi.product.name: MacBookPro14,3 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.94-1 version.libgl1-mesa-dri: libgl1-mesa-dri 18.1.5-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 18.1.5-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.20.1-1ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1build1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1build1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791822/+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
