$ inxi -Fxxxrz
System: Kernel: 5.4.0-77-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: Cinnamon 5.0.5 wm: muffin 5.0.1
dm: LightDM 1.30.0 Distro: Linux Mint 20.2 Uma base: Ubuntu 20.04 focal
Machine: Type: Desktop Mobo: ASRock model: B85M-ITX serial: <filter> UEFI [Legacy]: American Megatrends v: P2.50
date: 01/07/2016
CPU: Topology: Quad Core model: Intel Core i7-4790K bits: 64 type: MT MCP arch: Haswell rev: 3 L2 cache: 8192 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 63988
Speed: 900 MHz min/max: 800/4400 MHz Core speeds (MHz): 1: 863 2: 847 3: 857 4: 847 5: 815 6: 857 7: 834 8: 845
Graphics: Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics vendor: ASRock driver: i915 v: kernel
bus ID: 00:02.0 chip ID: 8086:0412
Display: x11 server: X.Org 1.20.9 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1200~60Hz
OpenGL: renderer: Mesa DRI Intel HD Graphics 4600 (HSW GT2) v: 4.5 Mesa 20.2.6 compat-v: 3.0 direct render: Yes
Audio: Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio vendor: ASRock driver: snd_hda_intel v: kernel
bus ID: 00:03.0 chip ID: 8086:0c0c
Device-2: Intel 8 Series/C220 Series High Definition Audio vendor: ASRock driver: snd_hda_intel v: kernel
bus ID: 00:1b.0 chip ID: 8086:8c20
Device-3: Sennheiser Headset [PC 8] type: USB driver: hid-generic,snd-usb-audio,usbhid bus ID: 3-10:8
chip ID: 1395:0025
Sound Server: ALSA v: k5.4.0-77-generic
Network: Device-1: Qualcomm Atheros QCA8171 Gigabit Ethernet vendor: ASRock driver: alx v: kernel port: e000 bus ID: 02:00.0
chip ID: 1969:10a1
IF: enp2s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
IF-ID-1: br-0bee92ea8a84 state: down mac: <filter>
IF-ID-2: br-1f1a0ba098d7 state: down mac: <filter>
IF-ID-3: br-79d4f30be0c9 state: down mac: <filter>
IF-ID-4: br-95de7a6a1085 state: down mac: <filter>
IF-ID-5: br-bd52899c321b state: up speed: N/A duplex: N/A mac: <filter>
IF-ID-6: docker0 state: down mac: <filter>
IF-ID-7: veth9bd00b6 state: up speed: 10000 Mbps duplex: full mac: <filter>
Drives: Local Storage: total: 931.52 GiB used: 90.73 GiB (9.7%)
ID-1: /dev/sda vendor: Samsung model: SSD 840 Series size: 232.89 GiB speed: 6.0 Gb/s serial: <filter> rev: 6B0Q
scheme: MBR
ID-2: /dev/sdb type: USB vendor: Western Digital model: WD7500BPVT-80HXZT3 size: 698.64 GiB rotation: 5400 rpm
serial: <filter> rev: 01.0 scheme: MBR
Partition: ID-1: / size: 212.10 GiB used: 90.52 GiB (42.7%) fs: ext4 dev: /dev/dm-1
ID-2: /boot size: 703.5 MiB used: 211.1 MiB (30.0%) fs: ext4 dev: /dev/sda1
ID-3: swap-1 size: 15.66 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/dm-2
Sensors: System Temperatures: cpu: 45.0 C mobo: N/A
Fan Speeds (RPM): N/A
Repos: No active apt repos in: /etc/apt/sources.list
Active apt repos in: /etc/apt/sources.list.d/additional-repositories.list
1: deb https://dl.winehq.org/wine-builds/ubuntu/ focal main
2: deb https://pkg.ltec.ch/public/ focal main
Active apt repos in: /etc/apt/sources.list.d/google-earth-pro.list
1: deb [arch=amd64] http://dl.google.com/linux/earth/deb/ stable main
Active apt repos in: /etc/apt/sources.list.d/josm.list
1: deb https://josm.openstreetmap.de/apt focal universe
Active apt repos in: /etc/apt/sources.list.d/mozillateam-ppa-focal.list
1: deb http://ppa.launchpad.net/mozillateam/ppa/ubuntu focal main
Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list
1: deb http://ftp.fau.de/mint/packages uma main upstream import backport
2: deb http://mirror.23media.com/ubuntu focal main restricted universe multiverse
3: deb http://mirror.23media.com/ubuntu focal-updates main restricted universe multiverse
4: deb http://mirror.23media.com/ubuntu focal-backports main restricted universe multiverse
5: deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
6: deb http://archive.canonical.com/ubuntu/ focal partner
Active apt repos in: /etc/apt/sources.list.d/skype-stable.list
1: deb [arch=amd64] https://repo.skype.com/deb stable main
Active apt repos in: /etc/apt/sources.list.d/spotify.list
1: deb http://repository.spotify.com stable non-free
Info: Processes: 361 Uptime: 1h 29m Memory: 15.30 GiB used: 2.13 GiB (13.9%) Init: systemd v: 245 runlevel: 5 Compilers:
gcc: 9.3.0 alt: 7/9 Shell: bash v: 5.0.17 running in: gnome-terminal inxi: 3.0.38
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 1 time in total.
Reason:Topic automatically closed 6 months after creation. New replies are no longer allowed.
Do you see some kernel messages (dmesg | grep -i error)?
I do have flickering after returning my laptop from suspend. It shows an error:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
And now I can trigger it (without goiing to supend with "xset dpms force off"
I am just curious wether this is same issue.
Strange is, that in Linux Mint 20.2 the flickering is far less intense as in Ubuntu Mate 20.4 - although I think they share same kernel.
If Mint does some tweaking (just guess, maybe increase some training time), maybe it is is just enough to tweak a little more.
While you can't ignore that in Ubuntu in Mint it flickers less and sometime it takes some minute until the first flicker happend.
The effect is a bit different here than in your video. It's not getting completely dark.
Suspend / sleep - what is the difference ?
It doesn't happen initially after boot from power-off. Only after suspend/sleep - or even without that with your command.
But I agree, if you don't see that kernel message it is likely something different.
Some more observations I want to share:
- changing the framerate or monitor modes in Settings doesn't let the flickering disappear
- I don't have any problems with any other resolution than 1920x1080 (which is the native one of my laptop - to bad).
In Ubuntu I created a custom resolution of 1912x1080 for that reason. That was best workaround I could find. Hopefully I remember how I did this.
I would be curious what effect a changed resolution it has for your system.
starbright wrote: ⤴Wed Aug 18, 2021 2:53 am
Suspend / sleep - what is the difference ?
I mean the monitor sleep mode. In energy settings I have my monitor set to turn off after 5 min and the system suspend after 10 min. The problem happens randomly in both cases for me. The "xset dpms force off" command will only turn off the monitor which is enough to reproduce the issue after some attempts.
Ah, just the monitor sleeps ? Ok, but in fact it is the graphics on PC/Laptop which sleeps as well. And if I could see with your xset command, that happens to me too. So it is not sleep/suspend of the PC of itself but of its graphics.
Please give another resolution a try.