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 gru
FWIW
Mine is a different Samsung machine (NP900x3d), my Ubuntu version is
12.10. I've tried with/without acpi_backlight=vendor .
More precisely this is my current boot command line:
luis@sams9:~$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-3.5.0-26-generic root=... ro quiet splash
i915.i915_ena
I can confirm this bug with the same machine: non-native resolution and
flickering, after installing the beta2 this morning.
A workaround for installation is to resort to the alternate-CD.
Rebooting after finishing installion ends in black screen, but changing
then into a console w/ CTL+ALT+F1 and
More tests:
I've been able to reproduce the random behavior reported by @Svante.
Sometimes the native resolution mode of the monitor (1366x768) is
recognized, sometimes it does not, and the system falls to 1024x768.
As a workaround I've created a typical screen.conf section in
/usr/share/X11/xorg
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