Updating my last post
1) Resolution problem
The screen.conf workaround posted before seems to be completely reliable. No more resolution problems until now.
2) Brightness control to reduce flickering
As a matter of fact 'pci=noacpi' is not necessary. It is enough to pass this parameter from grub:
acpi_backlight=vendor
Updating my last post
1) Resolution problem
The screen.conf workaround posted before seems to be completely reliable. No more resolution problems until now.
2) Brightness control to reduce flickering
As a matter of fact 'pci=noacpi' is not necessary. It is enough to pass this parameter from grub:
acpi_backlight= vendor