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Re: [Bug 538346] Re: Display manager in Ubuntu 9.10 not working with dual displays properly

 

On Wednesday 23 June 2010 10:45:41 you wrote:
> Hi Simon, so everything is working properly now? Great. :) Maybe it was
> an issue with those old NVIDIA files in the first place.
> 
> If the issue is resolved for you, please mark this bug as Invalid (since
> it was probably a configuration problem). Thanks!

David,

Yes, the original symptoms have disappeared, but new ones have appeared in 
their place. Presumably all due to the 'configuration' or 'bug'.

What would be causing the screen to display a mosaic on loading? I have also 
noted that the screen takes ~1-2 seconds longer to repaint in certain 
instances. For example, when the panels appear at startup - this takes 2 or so 
seconds where previously it was 1/2 a second. Although the screen appears to 
be working "the desktop" does not appear quite right.

After implementing your fix I have had the computer crash due what appeared to 
be screen related problems. 

What happened was ...
- I went to log off and the desktop noted that an unknown program was still 
open. 
- I waited but it did not finish. 
- I looked in the system monitor and could not see it. 
- Eventually I tried again and told the logout routine to force a shutdown. 
- What happened then was the screen became totally jumbled (looking 
suspiciously like the screen when starting up - i.e. confused) 
- I forced a hardware reboot and the problem has not reoccurred; yet

In another instance (again showing how things are not quite right) ...
- I logged off as a user and the dialog box listing the available users on the 
desktop behaved in an unusual manner.
- instead of appearing in the centre of the screen as usual the dialog box 
repainted so the height occupied the entire screen, then stepped down until 
eventually reaching 'normal size'. The process took 1-2 seconds, which seemed 
like an eternity. I was able to log back on.
- its like ubuntu is getting confused, or the driver is not really working 
properly. The fact that things eventually settle down - DURING A PARTICULAR 
SESSION - suggests that either the 'bug' is only triggered at certain times or 
ubuntu is falling back to generic drivers as the appropriate one does not work 
correctly.

So David, in your mind is this 'bug' actually fixed? To me, something is still 
not quite right. The system was more stable originally, just a pain to have to 
setup the dual screens on startup. Now I don't have to do this but a range of 
new symptoms have appeared. Superficially the aberrations are not deal breakers 
but that assumes (a) the symptoms are not indicative of something more 
serious, or (b) the system does not leave my 'blind' while doing some mission 
critical task resulting in data loss or corruption.

If you can help resolve these questions, it would be greatly appreciated, as 
my confidence in the stability of the system is undermined everytime I see a 
screen that would normally just appear; flicker, repaint slowly or not appear 
to behave in the same way as normal.

-- 
Cheers Simon

	Simon Cropper
	Botanicus Australia Pty Ltd
	PO Box 160 Sunshine 3020
	P: 03 9311 5822. M: 041 830 3437
	W: http://www.botanicusaustralia.com.au

-- 
Display manager in Ubuntu 9.10 not working with dual displays properly
https://bugs.launchpad.net/bugs/538346
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