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[Bug 1596216] Re: Black screen on boot; no modeset workaround broken by 16.04
The laptop is an HP 15-ab153nr.
I'm not certain what specific update caused the black screen issue to
appear. I know that the problem first appeared between Jan 23 and Feb 1
2016 as I mentioned it in another bug report:
I was frequently updating the machine in that time frame trying to
resolve the other issue, and I recall it taking a couple days to track
down the nomodeset workaround, so probably closer to the 23rd.
I upgraded from 15.04 to 15.10, and rebooted a couple times without
incident. The additional symptoms occurred immediately after the
upgrade to 16.04
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Black screen on boot; no modeset workaround broken by 16.04
Status in linux package in Ubuntu:
This bug appears to occur in several distros and architectures. On
this machine, it appeared somewhere in the last week of January, 2016,
after a system update.
On boot, the laptop monitor often flickers several times (signal
connecting and disconnecting) and always settles onto a full backlight
back screen. The screen does not change after that.
I found reports that adding nomodeset to the grub parameters would
resolve the issue. It does, but the workaround has significant issues
in 16.04. The nomodeset parameters conflict with both the amdgpu
driver package and the radeon driver package. When the machine boots,
it is in 800x600 resolution. While I can add new resolutions,
attempting to switch to them with xrandr throws the error "configure
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-24-generic 4.4.0-24.43
ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
Uname: Linux 4.4.0-24-generic x86_64
USER PID ACCESS COMMAND
/dev/snd/controlC1: jbhelfrich 2053 F.... pulseaudio
/dev/snd/controlC0: jbhelfrich 2053 F.... pulseaudio
Date: Sat Jun 25 14:49:22 2016
InstallationDate: Installed on 2015-10-30 (238 days ago)
InstallationMedia: Ubuntu-MATE 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
MachineType: HP HP Pavilion Notebook
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-24-generic.efi.signed root=UUID=613f6223-b665-4289-9dfa-7b003124dfdf ro quiet splash nomodeset i8042.dumbkbd=1 vt.handoff=7
UpgradeStatus: Upgraded to xenial on 2016-06-24 (1 days ago)
dmi.bios.vendor: American Megatrends Inc.
dmi.board.asset.tag: Base Board Asset Tag
dmi.chassis.version: Chassis Version
dmi.product.name: HP Pavilion Notebook
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