FFab, thank you for reporting this and helping make Ubuntu better. To clarify your Bug Description:
>"When booting the screen is black – backlight on – off - on." Are you noting that the laptop LCD backlight goes from 0% brightness to 100% automatically? If so, how often does it cycle between the two? If so, as per your attachment https://launchpadlibrarian.net/292333261/CurrentDmesg.txt : [ 0.576786] [Firmware Bug]: ACPI: No _BQC method, cannot determine initial brightness ** This bug is no longer a duplicate of bug 1597079 [HP Pavilion Notebook - 15-ab141na] Black Screen when Booting ** Summary changed: - black screen when booting + [HP Pavilion Notebook - 17-g164ng] black screen when booting ** Tags added: latest-bios-f.41 ** Description changed: - My notebook is a HP Pavilion 17-g164ng with an AMD A10-8780P APU and 2 - graphic subsystems - Carrizo, a VGA compatible controller and Topaz. - - When booting the screen is black – backlight on – off - on. - When HDD is inactive - - keyboard is not locked and I can shutdown/reboot by Alt + Print +o/b or Strg + Alt + Del + When booting the screen is black – backlight on – off - on. + When HDD is inactive + - keyboard is not locked and I can shutdown/reboot by Alt + Print +o/b or Strg + Alt + Del - remote access e.g. using ssh is possible - Testsystems: Ubuntu/Kubuntu 14.04, 15.10, 16.04, 16.10. - - Workaround, UEFI-boot, kernel parameters : - nomodeset - nomodeset xforcevesa - Resolution without/with xforcevesa: 800x600 / 1600x900 – the optimal resolution + My notebook is a HP Pavilion 17-g164ng with an AMD A10-8780P APU and 2 + graphic subsystems - Carrizo, a VGA compatible controller and Topaz. In 14.04 and 15.10 I installed fglrx – the AMD driver. It seems very similar to that described in #1597079. The bug report was generated from a remote PC. My HP notebook was started without any workaround parameters. - This apport does'nt display the second graphic subsystem Topaz R7 as an apport generated with nomodeset xforcevesa. + This apport doesn't display the second graphic subsystem Topaz R7 as an apport generated with nomodeset xforcevesa. + + WORKAROUND: When booting in UEFI mode, use kernel parameters: + nomodeset + + or: + nomodeset xforcevesa + + Resolution without xforcevesa: 800x600 + Resolution with xforcevesa: 1600x900 – the optimal resolution ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21 Uname: Linux 4.4.0-45-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Sat Nov 5 23:40:19 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: I just need to know a workaround GraphicsCard: - Advanced Micro Devices, Inc. [AMD/ATI] Carrizo [1002:9874] (rev c4) (prog-if 00 [VGA controller]) - Subsystem: Hewlett-Packard Company Carrizo [103c:80b6] + Advanced Micro Devices, Inc. [AMD/ATI] Carrizo [1002:9874] (rev c4) (prog-if 00 [VGA controller]) + Subsystem: Hewlett-Packard Company Carrizo [103c:80b6] InstallationDate: Installed on 2016-11-03 (2 days ago) InstallationMedia: Kubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) MachineType: HP HP Pavilion Notebook ProcEnviron: - TERM=xterm - PATH=(custom, no user) - LANG=de_DE.UTF-8 - SHELL=/bin/bash + TERM=xterm + PATH=(custom, no user) + LANG=de_DE.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-45-generic.efi.signed root=UUID=d006dbb4-8a2a-4cfe-b38e-7d35b34bca09 ro quiet splash SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/19/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F.41 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 80B6 dmi.board.vendor: HP dmi.board.version: 81.32 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF.41:bd09/19/2016:svnHP:pnHPPavilionNotebook:pvr:rvnHP:rn80B6:rvr81.32:cvnHP:ct10:cvrChassisVersion: dmi.product.name: HP Pavilion Notebook dmi.sys.vendor: HP version.compiz: compiz N/A version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Sat Nov 5 23:32:11 2016 xserver.configfile: default xserver.errors: - + xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.18.4-0ubuntu0.1 xserver.video_driver: amdgpu ** Tags added: trusty wily yakkety ** Description changed: When booting the screen is black – backlight on – off - on. When HDD is inactive - keyboard is not locked and I can shutdown/reboot by Alt + Print +o/b or Strg + Alt + Del - remote access e.g. using ssh is possible Testsystems: Ubuntu/Kubuntu 14.04, 15.10, 16.04, 16.10. My notebook is a HP Pavilion 17-g164ng with an AMD A10-8780P APU and 2 graphic subsystems - Carrizo, a VGA compatible controller and Topaz. - In 14.04 and 15.10 I installed fglrx – the AMD driver. - It seems very similar to that described in #1597079. The bug report was generated from a remote PC. My HP notebook was started without any workaround parameters. This apport doesn't display the second graphic subsystem Topaz R7 as an apport generated with nomodeset xforcevesa. + + WORKAROUND: In 14.04 and 15.10 I installed fglrx – the AMD driver. WORKAROUND: When booting in UEFI mode, use kernel parameters: nomodeset or: nomodeset xforcevesa Resolution without xforcevesa: 800x600 Resolution with xforcevesa: 1600x900 – the optimal resolution ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21 Uname: Linux 4.4.0-45-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Sat Nov 5 23:40:19 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: I just need to know a workaround GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Carrizo [1002:9874] (rev c4) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Carrizo [103c:80b6] InstallationDate: Installed on 2016-11-03 (2 days ago) InstallationMedia: Kubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) MachineType: HP HP Pavilion Notebook ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=de_DE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-45-generic.efi.signed root=UUID=d006dbb4-8a2a-4cfe-b38e-7d35b34bca09 ro quiet splash SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/19/2016 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F.41 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 80B6 dmi.board.vendor: HP dmi.board.version: 81.32 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF.41:bd09/19/2016:svnHP:pnHPPavilionNotebook:pvr:rvnHP:rn80B6:rvr81.32:cvnHP:ct10:cvrChassisVersion: dmi.product.name: HP Pavilion Notebook dmi.sys.vendor: HP version.compiz: compiz N/A version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Sat Nov 5 23:32:11 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.18.4-0ubuntu0.1 xserver.video_driver: amdgpu ** Changed in: xorg (Ubuntu) Importance: Undecided => Low ** Changed in: xorg (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1639517 Title: [HP Pavilion Notebook - 17-g164ng] black screen when booting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1639517/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
