*** This bug is a duplicate of bug 1909496 ***
https://bugs.launchpad.net/bugs/1909496
Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1909496, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report. Feel free to continue to report any other bugs you may
find.
** This bug has been marked a duplicate of bug 1909496
[i915] Blinking unlock screen
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https://bugs.launchpad.net/bugs/1910861
Title:
Screen Keeps Blinking/Flickering after waking up from lock
Status in linux package in Ubuntu:
Confirmed
Bug description:
Description: Ubuntu 20.04.1 LTS
Release: 20.04
What you expected to happen?
After waking up from lock it should show the enter password screen and then after entering password it should show desktop
What happened instead?
After waking up the machine from lock , its starts flickering/blinking with black backlight for some times (from 20 seconds to 5 mins) and then shows enter password screen to login.
Following is my hardware information along with a short video what
happens
Hardware Information :
System: Kernel: 5.8.0-36-generic x86_64 bits: 64 compiler: N/A Desktop: Gnome 3.36.3
Distro: Ubuntu 20.04.1 LTS (Focal Fossa)
Machine: Type: Laptop System: Dell product: Vostro 15-3568 v: N/A serial: <filter>
Mobo: Dell model: 01Y1RD v: A00 serial: <filter> UEFI: Dell v: 01.08.00 date: 03/23/2017
CPU: Topology: Dual Core model: Intel Core i5-7200U bits: 64 type: MT MCP arch: Amber Lake rev: 9 L2 cache: 3072 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 21599
Speed: 800 MHz min/max: 400/3100 MHz Core speeds (MHz): 1: 802 2: 800 3: 800 4: 800
Graphics: Device-1: Intel HD Graphics 620 vendor: Dell driver: i915 v: kernel bus ID: 00:02.0
Display: wayland server: X.Org 1.20.8 driver: i915 resolution: 1366x768~48Hz
OpenGL: renderer: Mesa Intel HD Graphics 620 (KBL GT2) v: 4.6 Mesa 20.0.8 direct render: Yes
Video Link : hhttps://youtu.be/XPfYNbduPig
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: rishiraj 1366 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2021-01-10 (0 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
MachineType: Dell Inc. Vostro 15-3568
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-36-generic root=UUID=ac2bc6f4-820f-41d4-b012-59118c273761 ro quiet splash drm.debug=0x1e log_buf_len=4M vt.handoff=7
ProcVersionSignature: Ubuntu 5.8.0-36.40~20.04.1-generic 5.8.18
RelatedPackageVersions:
linux-restricted-modules-5.8.0-36-generic N/A
linux-backports-modules-5.8.0-36-generic N/A
linux-firmware 1.187.7
Tags: focal wayland-session
Uname: Linux 5.8.0-36-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 03/23/2017
dmi.bios.release: 1.8
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 01.08.00
dmi.board.name: 01Y1RD
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr01.08.00:bd03/23/2017:br1.8:svnDellInc.:pnVostro15-3568:pvr:rvnDellInc.:rn01Y1RD:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.family: Vostro
dmi.product.name: Vostro 15-3568
dmi.product.sku: 0794
dmi.sys.vendor: Dell Inc.
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