Upgrade 19.09 to 20.03 : pb with Graphic card

Hi all,

I reverted my upgrade to 20.03 :slightly_frowning_face: because i meet a big issue.

  1. with gnome-xorg my screen is flashing . :frowning: not very easy.

Hardware info .

lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02)

pilote info

lshw -C display
*-display
physical id: 2
bus info: pci@0000:00:02.0
version: 02
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:136 memory:de000000-deffffff memory:c0000000-cfffffff ioport:f000(size=64) memory:c0000-dffff

Thank you for the help.
Pierre

This laptop is “Clevo N240WU”

CPU: Intel  i3-7100U CPU @ 2.40GHz
GPU: Intel UHD 620
RAM: 8 GB DDR4-2400
Screen: 14-inch 1920x1080 IPS
Storage: 1 x 250 GB SSD
Ports: 1 x USB3, 1 x USB2, 1 x USB Type-C, HDMI 1.4b, VGA, SD card reader
Networking: 1000 Gbps RJ45 LAN, 802.11ac
Battery: 44 Wh (external access for swapping packs)

Work fine with Xorg with Nixos 19.09
Flash with Wayland like with nixos 20.03

The pb exist with the kernel 5.4.35

Since the last update With kernel 5.4.38
it’s work fine.

Gnome ( wayland ) does not work …

With kernel 5.4.39 the pb come back :slightly_frowning_face: :woozy_face:

Same thing with : 5.4.41