Flickering problems

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Tenorman
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Flickering problems

Post by Tenorman »

I've tried searching through the forums and not found any answer to my particular problem, but please do direct me if it's been asked before.

I've a Lenovo v145 laptop that I dual boot Linux Mint 19.3 and Windows 10. Under Windows it's fine - albeit slow and clunky as is the way with Windows. Under Mint it's far better and quicker, but it has an annoying flickering problem. It's an AMD A9 processor and AMD Radeon R5 graphics card. The driver is amdgpu - I'm not sure if it should be amdgpu-pro, but I've had difficulties trying to install that, and don't even know if it's the problem.

What info do I need to post here for anyone to be able to help?

Cheers

Tenorman
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Re: Flickering problems

Post by Tenorman »

Just to add to this - I found the workaround to installing the latest amdgpu-pro : editing /etc/os-release to change linuxmint 19.3 to ubuntu 18.04, but it didn't solve the flickering problem. It did, however, lead Cinnamon to constantly crash, so I've uninstalled it and Cinnamon is back, but still have the flickering problem.

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Metuka
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Re: Flickering problems

Post by Metuka »

Are you using Redshift? Because it did that to me all the time until I unistalled it.
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Tenorman
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Re: Flickering problems

Post by Tenorman »

I'm not sure. What is Redshift? I haven't added anything much to the new installation of Mint 19.3 - if that includes REdshift then I'm probably using it.

cosmon
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Re: Flickering problems

Post by cosmon »

Redshift is an applet that reduces blue light at night time.

You can check it by right clicking on your panel/taskbar, click applets and under manage search for redshift. If it's not there, you don't have it.

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Metuka
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Re: Flickering problems

Post by Metuka »

It's a program that changes the color "temperature" and can make it warmer in the evening, for example. I think it comes with Mint by default and it would do that constantly. After removing it, no more flickering for me.
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Tenorman
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Re: Flickering problems

Post by Tenorman »

Removed it and rebooted, but the flickering is still there.

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Metuka
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Re: Flickering problems

Post by Metuka »

Meh. Sorry. It was worth trying.
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Tenorman
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Re: Flickering problems

Post by Tenorman »

Thanks anyway - I had something similar on my old laptop, running an earlier version of Mint. The time related blue/red shift app used to cause the screen to flicker like mad when it went into screensaver mode. Luckily it didn't affect it when on normally.

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Re: Flickering problems

Post by Tenorman »

Anyone any ideas where to start? What output could I post here that might shed some light on the cause of the flickering?

Cheers

Tenorman
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Re: Flickering problems

Post by Tenorman »

Reading a couple of other threads, I'm guessing this output is a good place to start. Does it suggest anything to anyone as to why I have a flickering display?

Code: Select all

colin@colin-Lenovo-V145-15AST:~$ inxi -Fxz
System:
  Host: colin-Lenovo-V145-15AST Kernel: 5.3.0-26-generic x86_64 bits: 64 
  compiler: gcc v: 7.4.0 Desktop: Cinnamon 4.4.8 
  Distro: Linux Mint 19.3 Tricia base: Ubuntu 18.04 bionic 
Machine:
  Type: Laptop System: LENOVO product: 81MT v: Lenovo V145-15AST 
  serial: <filter> 
  Mobo: LENOVO model: LNVNB161216 v: SDK0J40709 WIN serial: <filter> 
  UEFI: LENOVO v: 8ZCN23WW(V2.02) date: 05/09/2019 
Battery:
  ID-1: BAT1 charge: 29.9 Wh condition: 29.9/30.0 Wh (100%) 
  model: LENOVO PABAS0241231 status: Full 
CPU:
  Topology: Dual Core model: AMD A9-9425 RADEON R5 5 COMPUTE CORES 2C+3G 
  bits: 64 type: MCP arch: Excavator L2 cache: 1024 KiB 
  flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm 
  bogomips: 12375 
  Speed: 1516 MHz min/max: 1400/3100 MHz Core speeds (MHz): 1: 1398 2: 1397 
Graphics:
  Device-1: AMD Stoney [Radeon R2/R3/R4/R5 Graphics] vendor: Lenovo 
  driver: amdgpu v: kernel bus ID: 00:01.0 
  Device-2: AMD Topaz XT [Radeon R7 M260/M265 / M340/M360 / M440/M445] 
  vendor: Lenovo driver: amdgpu v: kernel bus ID: 01:00.0 
  Display: x11 server: X.Org 1.20.5 driver: amdgpu,ati 
  unloaded: fbdev,modesetting,vesa resolution: 1920x1080~60Hz 
  OpenGL: renderer: AMD STONEY (DRM 3.33.0 5.3.0-26-generic LLVM 9.0.1) 
  v: 4.5 Mesa 20.0.0-devel (git-28eb481 2020-01-21 bionic-oibaf-ppa) 
  direct render: Yes 
Audio:
  Device-1: AMD vendor: Lenovo driver: snd_hda_intel v: kernel 
  bus ID: 00:01.1 
  Device-2: AMD Family 15h Audio vendor: Lenovo driver: snd_hda_intel 
  v: kernel bus ID: 00:09.2 
  Sound Server: ALSA v: k5.3.0-26-generic 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Lenovo driver: r8169 v: kernel port: 3000 bus ID: 02:00.0 
  IF: enp2s0 state: down mac: <filter> 
  Device-2: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter 
  vendor: Lenovo driver: ath10k_pci v: kernel port: 3000 bus ID: 03:00.0 
  IF: wlp3s0 state: up mac: <filter> 
  Device-3: Atheros type: USB driver: btusb bus ID: 1-1.2:3 
Drives:
  Local Storage: total: 238.47 GiB used: 27.96 GiB (11.7%) 
  ID-1: /dev/sdb vendor: Samsung model: MZ7LN256HAJQ-000L2 size: 238.47 GiB 
Partition:
  ID-1: / size: 89.11 GiB used: 27.92 GiB (31.3%) fs: ext4 dev: /dev/sdb5 
Sensors:
  System Temperatures: cpu: 58.4 C mobo: N/A 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 284 Uptime: 5d 18h 23m Memory: 7.31 GiB used: 5.75 GiB (78.7%) 
  Init: systemd runlevel: 5 Compilers: gcc: 7.4.0 Shell: bash v: 4.4.20 
  inxi: 3.0.32 
colin@colin-Lenovo-V145-15AST:~$ 

steep
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Re: Flickering problems

Post by steep »

Hi,

I was also having flickering issue with Lenovo V145. The screen was flickering occasionally for 2-10 seconds, usually quite soon after login. I disabled Vsync and this seems to have fixed the issue.

Menu > Preferences > General > VSync method --> None

dueller
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Re: Flickering problems

Post by dueller »

Could you please try an older kernel e.g. not newer than 4.15.0-54 or 5.0.0-20
I have flickering problems after those kernels.
I don't know if related but could be useful to verify.

Try to boot an older mint live release. For example tara or Tessa:
https://linuxmint.com/download_all.php

BTW I opened this bug:
https://bugs.launchpad.net/ubuntu/+sour ... ug/1861554

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