It seems only 5.15 was the problem. I can confirm it to work on most of
the next major versions: I tried the latest of each series, 5.17.x,
5.18.x, 5.19.x and finally 6.0.0 and 6.0.1 and it works on all of them.
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** Description changed:
- On an HP x360 Spectre (i7-8565U WhiskeyLake-U GT2 [UHD Graphics 620]),
- after upgrading to 22.04 from 21.10, the display goes to some flickering
- lines in black and grey or colors (remember the artifacts on Amstrad CPC
- or C64 when loading from a tape? Same here...).
It works with the kernel 5.15.0-30-generic now.
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https://bugs.launchpad.net/bugs/1973676
Title:
flickering and black screen from boot time, no more display after
22.04
done in Bug #1973676
Thanks Daniel
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https://bugs.launchpad.net/bugs/1958191
Title:
[i915] Screen flickering in Ubuntu 22.04 (until i915.enable_dc=0
Public bug reported:
On an HP x360 Spectre (i7-8565U WhiskeyLake-U GT2 [UHD Graphics 620]),
after upgrading to 22.04 from 21.10, the display goes to some flickering
lines in black and grey or colors (remember the artifacts on Amstrad CPC
or C64 when loading from a tape? Same here...).
After the
Half-related to this bug but worth mentioning it because it is certainly
linked to it. On a HP x360 Spectre (i7-8565U WhiskeyLake-U GT2 [UHD
Graphics 620]), the trick with GRUB_CMDLINE_LINUX_DEFAULT.
The problem is more serious here because the screen flickers and goes to
black, purple, green,
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