xrandr laptop monitor flickering

[Ivan Glushkov <glushkov@mail.desy.de>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi,

I use my laptop monitor (1280x800@60), and an external Samsung
SyncMaster 740T (1280x1024@75) connected via VGA to the laptop. The
configuration is:

~ % xrandr
Screen 0: minimum 320 x 200, current 1280 x 800, maximum 1280 x 1824
VGA-0 connected (normal left inverted right x axis y axis)
   1280x1024      60.0 +   75.0     59.9
   1280x960       59.9
   1152x864       75.0     74.8
   1024x768       75.1     70.1     60.0
   832x624        74.6
   800x600        72.2     75.0     60.3     56.2
   640x480        75.0     72.8     66.7     60.0
   720x400        70.1
LVDS connected 1280x800+0+0 (normal left inverted right x axis y axis)
0mm x 0mm
   1280x800       60.0*+   60.0
   1280x768       60.0
   1024x768       60.0
   800x600        60.3
   640x480        59.9
S-video disconnected (normal left inverted right x axis y axis)

Issuing:
~ % xrandr --output VGA-0 --above LVDS --mode 1280x1024 --rate 75

does work perfectly i.e. spreading my desktop over both monitors, except
for the fact that the lower part of my laptop screen starts flickering
once per 10-15 seconds. The same xrandr configuration was working a
month ago, obviously something happened after some update.

Has anybody else also observed that?

	Cheers,
	Ivan
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.6 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFHxUqpoPV3uf0E1nsRArPNAJ4694H0Q/7/eMh/XYD1pQL/g2/RPwCgwTqR
F0j6hKkt7RoHskJnMGuNpH0=
=nkcD
-----END PGP SIGNATURE-----

begin:vcard
fn:Ivan Glushkov
n:Glushkov;Ivan
org:Deutsches Electronen Synchrotron DESY
adr:;;Notkestrasse 85;Hamburg;;22607;Gernamy
email;internet:Ivan.Glushkov@desy.de
tel;work:+494089983293
tel;fax:+494089983094
tel;home:+494065592428
tel;cell:+4917670029168
x-mozilla-html:FALSE
url:www.desy.de/~glushkov/
version:2.1
end:vcard