Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.8 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8 ** Changed in: linux (Ubuntu) Importance: Critical => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1624915 Title: Laptop monitor does not initially display Status in linux package in Ubuntu: Incomplete Bug description: When booting my laptop from a cold boot, my monitor is black and shows nothing. It's as if it's defaulting to an external monitor that isn't there. Hotkeys like for wireless work and hitting certain keys I can get alert beeps. If I close my lid after a certain time, let the laptop sleep, then open it back up, my laptop display works. I have to do this on every boot though. I tried adding 'nomodeset' to grub and that fixes the issue, however suspend no longer works, trying to suspend my laptop will always result in a crash and having to reboot every time. Laptop: HP Pavilion dv6 Graphics: AMD A8 APU lspci -nn | grep VGA: 00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] BeaverCreek [Radeon HD 6620G] [1002:9641] Ubuntu Mate 16.04.1 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-36-generic 4.4.0-36.55 ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16 Uname: Linux 4.4.0-36-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: matt 3581 F.... pulseaudio /dev/snd/controlC0: matt 3581 F.... pulseaudio CurrentDesktop: MATE Date: Sun Sep 18 14:30:34 2016 HibernationDevice: RESUME=UUID=3fc4e517-79e6-42c7-aaae-ef67aa90114f InstallationDate: Installed on 2016-05-06 (135 days ago) InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-36-generic root=UUID=df959605-bc73-46dc-87a1-14b707d40867 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-36-generic N/A linux-backports-modules-4.4.0-36-generic N/A linux-firmware 1.157.3 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/02/2011 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: F.02 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 1805 dmi.board.vendor: Hewlett-Packard dmi.board.version: 33.19 dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnHewlett-Packard:bvrF.02:bd09/02/2011:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr0591110000204710000620100:rvnHewlett-Packard:rn1805:rvr33.19:cvnHewlett-Packard:ct10:cvrChassisVersion: dmi.product.name: HP Pavilion dv6 Notebook PC dmi.product.version: 0591110000204710000620100 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1624915/+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
