Flickering? Could it be that your modelines aren't what they should
be?

Wouter


On 16-Nov-03 hazzmat wrote:
> [EMAIL PROTECTED] wrote:
> 
>>Hazzmat,
>>
>>I've used lots of S3 cards with LTSP.
>>
>>You said you installed the ltsp_x336_s3 package.  Did you also
>>set XSERVER = XF86_S3 ?    I'm guessing you did, but just figured
>>I'd make sure.
>>
>>  
>>
> Yep.
> 
>>Adding swap via NFS won't help the video at all.  it's only
>>gonna help system ram.
>>
>>with only 1mb of video ram, you can't do 1024x768 16-bits.  that
>>requires 1.5mb of video ram.   ( 1024 x 768 ) * 2  = 1,572,864
>>
>>So, the fact that you only get 800x600 doesn't surprise me.
>>
>>  
>>
> Ok I guess I was remembering a similar IBM desktop with onboard
> S3trio, 
> but with 2MB video RAM instead of 1MB. I've accumulated a small
> pile of 
> old desktops more or less the same.
> 
> That would mathematically explain the 800x600 desktop. Could it
> also be 
> the source of the flickering/tearing? Another "artifact" that I
> didn't 
> describe in the original post was a vertical band of noise-like 
> distortion up the right side of the screen. Heck maybe the S3 chip
> in 
> this PC is just about to kick the can.
> I don't have any PCI video cards to test with yet, but I can see
> that 
> I'll be definitely needing them now.
> 
> S3 Savage IX --anyone have experience with these and X (the X4
> version 
> that comes with LTSP)? Or does anyone know of another kind of PCI
> video 
> card that is truly well supported but cheap as dirt? like $15< ?
> 
> Thanks.
> 
>>Jim McQuillan
>>[EMAIL PROTECTED]
>>
>>
>>
>>On Sat, 15 Nov 2003, hazzmat wrote:
>>
>>  
>>
>>>Hello, I have just made my first experimental install of LTSP. The
>>>server is Mandrake 9.0 and I used rpms from sourceforge as they
>>>seemed 
>>>to install OK. The etherboot nic is a tulip lne100 from diskless 
>>>workstations with onboard bootrom. Between the ws001 (which is an
>>>old 
>>>p166 desktop w/32 MB of RAM) is a 100base-t switch. The server
>>>also has 
>>>a 100base-t nic.
>>>With a little scraped knuckles everything is basically working.
>>>Praise 
>>>be to LTSP.
>>>However, there is this weird flickering of the root window. Like
>>>part of 
>>>the GDM window appears to be tearing off from the login box and
>>>appears 
>>>slightly displaced to the right. It flickers like this appearing
>>>and 
>>>disappearing in less than half a second.
>>>This is an 1996 vintage desktop from IBM with S3trio builtin video
>>>chipset and 1 MB ram. I know desktops like this will do 1024x768
>>>at 16 
>>>bits, but this setup is producing only a 800x600 desktop and this 
>>>flickering problem. I altered lts.conf for ws001 so that it used
>>>an NFS 
>>>swap file to increase the locally available RAM but it didn't
>>>help.
>>>Could the flickering be network related?
>>>Or is it simply not good enough a video chipset for use with LTSP
>>>? I 
>>>installed the Xfree86-3.3.6 server for S3 instead of going with
>>>X4. I 
>>>tried X4 at first --it didn't seem terribly happy. I don't think
>>>these 
>>>S3trio chipsets were well supported by X4 until X4.3. I 've also
>>>never 
>>>known this flickering or desktop size limitation to happen with a
>>>system 
>>>built on this desktop with a normal (local) install. I don't
>>>recall ever 
>>>seeing such bad artifacts with remote X display either.
>>>Is this unusual?
>>>Do I just need to buy some halfway decent video cards to make this
>>>go away?
>>>
>>>thanks.

--------------------------------------------------
Wouter DeBacker ([EMAIL PROTECTED])
16-Nov-03    14:42:04    (SuSE Linux Xfmail)
In a world without fences who needs Gates ?
--------------------------------------------------


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