Now, the bug appears if I write "nomodeset" at boot. And only in that case.
If I don't write anything, I don't have that bug but very very low window switching. (and glxinfo crashes when trying to get information about the situation)
It looks like the situation is reverted.
pci=nomsi allows me to have snappy windows switching and, so far, no bug (but some light brightness changes. I cross my fingers that it will not become a pink screen).
ok, it's becoming more and more crazy.
Now, the bug appears if I write "nomodeset" at boot. And only in that case.
If I don't write anything, I don't have that bug but very very low window switching. (and glxinfo crashes when trying to get information about the situation)
It looks like the situation is reverted.
pci=nomsi allows me to have snappy windows switching and, so far, no bug (but some light brightness changes. I cross my fingers that it will not become a pink screen).