If the system is upgraded from 16.04, there should be some older kernels still in your system. See if those kernels still work.
-- 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/1794995 Title: 18.04 can't adjust brightness on ASUS T300F. Worked fine on 16.04. Status in linux package in Ubuntu: Invalid Bug description: Title of my display under Settings is "Unknown Display". I think there's no proper display driver for my laptop in this new distribution, "18.04", because the setting for my display works fine before I upgrade from 16.04. While I said "works fine", I meant, I could use the "fn" button plus with the brightness adjusting button, which is "f5" and "f6" on my laptop, to adjust the brightness. Other than the "fn" combination button not working, I can't even adjust the brightness in the setting and inside the main menu bar, which I think there might have since a control center is one of the features of this version upgrade. So, thanks for reading my problem, and please help, otherwise, it's so unhealthy for my eyes for looking at a screen with too bright for so long and I have to look at the screen for so long. Thanks in advance. Ps, in case it's needed, the model of my laptop is, ASUS T300F. A transform 2-in-one laptop. The fact that my laptop can "transform" might be the reason why I got this issue, the drive that serves all just fail to meet its needs. I'm sorry. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xorg 1:7.7+19ubuntu7.1 Uname: Linux 4.17.0-041700rc3-generic x86_64 .tmp.unity_support_test.1: ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Fri Sep 28 21:44:14 2018 DistUpgraded: Fresh install DistroCodename: bionic DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation HD Graphics 5300 [8086:161e] (rev 08) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. HD Graphics 5300 [1043:15fd] InstallationDate: Installed on 2018-04-04 (177 days ago) InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228) LightdmDisplayLog: (II) Server terminated successfully (0). Closing log file. MachineType: ASUSTeK COMPUTER INC. T300FA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.17.0-041700rc3-generic root=UUID=63fcbd04-ec8b-462c-ba66-4f45c229353c ro quiet splash nomodeset vt.handoff=1 Renderer: Software SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/01/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: T300FA.214 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: T300FA 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.:bvrT300FA.214:bd09/01/2015:svnASUSTeKCOMPUTERINC.:pnT300FA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnT300FA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: T dmi.product.name: T300FA dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1 version.libdrm2: libdrm2 2.4.91-2 version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2 xserver.bootTime: Fri Sep 28 21:43:24 2018 xserver.configfile: default xserver.errors: open /dev/dri/card0: No such file or directory open /dev/dri/card0: No such file or directory Screen 0 deleted because of no matching config section. AIGLX: reverting to software rendering xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.19.6-1ubuntu4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1794995/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp