![]() See the issue described sparsely in docs: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.enable_psr=0 i915.edp_vswing=2" Search for this line and extend the value with i915 prefixed params as below: What helped me with flickering was to set the i915 kernel parameters in /etc/default/grub ![]() As of hardware, I have Intel UHD 620 integrated GPU, and for CPU, i5 8350U unit. I know the question is over 2 years old, but I got the same issues recently with i915 graphics driver, running Pop OS 19.04 (Ubuntu based distro). Note: I applied the same Ubuntu LTS Enablement Stack on my desktop without this issue. I found some more or less similar issues on Arch forum, but I guess that Xorg is not managed the same way in Kubuntu 16.04. Note regarding similar issues on this forum : This is the error message in dmesg: ] *ERROR* CPU pipe B FIFO underrun The last one is the most important issue. I get kernel messages and flickering screen when I work on my terminal (yakuake or Konsole), and after several issues like this, my X freezes and I need to rebobot. Great.Īctually, it seems it brought some regressions too (not sure they are all linked to this).īuttons display in LibreOffice are readable anymore (several layers mixed together).Ĭells selection in LibreOffice Calc is now invisible. I checked some resources on the internet and decided to apply the Ubuntu LTS Enablement Stack to upgrade my kernel from 4.4.x to 4.8.x. I got some issues with display windows refresh. Network: Card-1: Intel 82577LM Gigabit Network Connection driver: e1000eĬard-2: Intel Centrino Advanced-N 6200 driver: iwlwifiĭrives: HDD Total Size: 256.1GB (27.4% used) GLX Renderer: Mesa DRI Intel Ironlake Mobile GLX Version: 2.1 Mesa 12.0.6 Graphics: Card: Intel Core Processor Integrated Graphics Controllerĭisplay Server: X.Org 1.18.4 drivers: (unloaded: fbdev,vesa) Resolution: Mobo: Dell model: 0D8H24 v: A00 Bios: Dell v: A14 date: ĬPU: Dual core Intel Core i5 M 560 (-HT-MCP-) speed/max: 1199/2667 MHz ![]() Machine: System: Dell (portable) product: Latitude E4310 v: 0001 ![]() ![]() System: Host: balrog Kernel: 4.8.0-42-generic x86_64 (64 bit) Desktop: KDE Plasma 5.5.5 ![]()
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