Screen Flickering during Boot up

[sourabh]

The Screen flickers during boot up and System runs very slow.

This is my GPU info.

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 5.0.0-36.39~18.04.1-generic 5.0.21
Uname: Linux 5.0.0-36-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun Dec 1 11:07:19 2019
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 6.30.223.271+bdcom, 5.0.0-32-generic, x86_64: installed
 bcmwl, 6.30.223.271+bdcom, 5.0.0-36-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo 2nd Generation Core Processor Family Integrated Graphics Controller [17aa:3977]
InstallationDate: Installed on 2019-05-22 (192 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
MachineType: LENOVO 20157
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-36-generic root=UUID=fb1d2555-5fe7-4a82-804c-8b91c22c2a1f ro quiet splash
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/26/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 62CN34WW
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Emerald Lake 2
dmi.board.vendor: LENOVO
dmi.board.version: FAB1
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnLENOVO:bvr62CN34WW:bd04/26/2012:svnLENOVO:pn20157:pvrLenovoG580:rvnLENOVO:rnEmeraldLake2:rvrFAB1:cvnLENOVO:ct10:cvr0.1:
dmi.product.family: ChiefRiver System
dmi.product.name: 20157
dmi.product.sku: System SKUNumber
dmi.product.version: Lenovo G580
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.95-1~18.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.8-0ubuntu0~18.04.2
version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.8-0ubuntu0~18.04.2
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A

[Daniel van Vugt (vanvugt)]

These kernel messages look related to possible flickering:

[ 20.272352] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[ 20.272749] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder A
[ 20.272809] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Kai-Heng Feng (kaihengfeng)]

Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5/

[Daniel van Vugt (vanvugt)]

The messages in comment #2, from CurrentDmesg.txt, suggest this is a duplicate of bug 1550779, or bug 1542412

[sourabh (ssar)]

I'm not sure why this tagged as duplicate. In my case, the screen starts flickering starts during boot up, and it doesn't even go to the login screen.
However, to bypass this flickering, after restart I hold the shift key pressed and somehow get into the login screen. But even after logging, I still couldn't use the system as it is response time is SUPER slow.
(unfortunately, moved back to windows now!!! :( )

[Daniel van Vugt (vanvugt)]

No problem, but there is some good news... The above bug reports about flickering seem to have stopped after Ubuntu 18.04. This suggests 19.10 might not have the bug. Or it might just be because there are so many more users of 18.04 than 19.10. So if you feel like testing 19.10 from USB please do:

https://ubuntu.com/download/desktop

[sourabh (ssar)]

Thanks Dan, Sure I'll check with 19.10, if it passes test with USB, will move to Ubuntu in no time.