[rhelv6-list] Opinions on multi-head

[Jussi Silvennoinen]

>> > >  Hum, how about 'export vblank_mode=0 ; glxgears'? Gaming aside, 
>> > >  2500fps
>> > >  from a Nvidia NVS290 wasn't enough to run compiz on a 3200x1200 
>> > >  dualhead
>> > >  smoothly enóugh for my taste. 9000fps from a Quadro 600 did the trick.
>> > >  Both using Nvidia's proprietary driver.
>> > 
>> >  I'm running at 4320x900, or one desktop across three 1440x900 screens.
>> >  Compiz works just fine to my eye.
>> > 
>> >  To use the Quadro 600 for three monitors, I would have had to buy two
>> >  of them, instead of the one V4900. Essentially that would double my
>> >  cost, and add the hassle of proprietary drivers. Also, I MASSIVELY
>> >  prefer to use OSS instead of closed source.
>> > 
>> >  Anyway, I ran your command, and I got an average of about 4000fps.
>> >  Plenty snappy for my use.
>> > 
>> >  [tcameron at case Desktop]$ export vblank_mode=0 ; glxgears
>> > ATTENTION:  default value of option vblank_mode overridden by 
>> > ATTENTION:  environment.
>> > ATTENTION:  default value of option vblank_mode overridden by 
>> > ATTENTION:  environment.
>> >  17754 frames in 5.0 seconds = 3550.749 FPS
>> >  17699 frames in 5.0 seconds = 3539.472 FPS
>>
>>  Wonderful. Do you use xinerama?
>>
>>  I cannot get xinerama to work properly with any newish Nvidia driver and
>>  RHEL6.2's X.org, window borders go AWOL.
>
> Weird, I used Xinerama all the time with my GeForce 7300 GT in dual-head 
> mode, and never had an issue with my borders. Same now that it's the v4900... 
> No issues at all.

Everything was honky dory for many years and OS releases. RHEL6.2 X.org 
required newer Nvidia drivers than I was running and Xinerama simply 
refuses to work properly with this combination.

Beer reward for fix :)

-- 

   Jussi