Re: Problems with IBM ThinkPad T30 1400x1050 display?

> Date: Sat, 3 Aug 2002 13:20:45 -0400
> From: Jonathan Chen <[email protected]>
> 
> On Mon, Jul 29, 2002 at 01:32:51PM -0700, Kevin Oberman wrote:
> > I have a shiny new T30 which is driving me bats. It's almost
> > wonderful, but I have one FreeBSD show-stopper that I need to fix,
> > work-around, or surrender. (And I love this box too much to surrender
> > easily.)
> > 
> > The problem is that the display goes crazy from time to time. I start
> > X, Gnome, and Enlightenment just fine and it looks wonderful. But, if
> > the display is turned off by time-out (APM) or manually pressing
> > Fn-F3, the display will sometimes return to "normal" and some times
> > come up with what I can only call horizontal sync problems. I see
> > parts of the display repeated at various intervals across the screen.
> 
> FYI, on my not-as-shiny-as-the-tibook new T30, switching to VTY and back to 
> X solves the problem every time I tried it.  Note that:
>  - my VTYs run at 80x50
>  - This is XFree86-4.2.0_1,1
>  - I'm using standard xf86cfg-generated XF86Config (no device options)
>  - I'm not using GENERIC kernel, relavent options might include:
>    - I'm not using splash
>    - no VESA either
>    - MAXCONS=32
>    - I have options AUTO_EOI_1
>    - -STABLE from around Jul 15
> 
> I'm not a heavy X user (MAXCONS=32!), so it could just be my luck so far.  
> YMMV.
> 
> -Jon
> 

Jonathan,

Thanks for the comments, but no luck.

I run my display at 80x50, too. I am running XFree86-Server
V4.2.0_3,1, I have tried standard and various options on my XF86
configuration. No VESA and the daemon splash (as the card has no
graphic mode to support anything fancier) and stable as of today.

It will OCCASIONALLY sync when I switch to VT, but often does
not. The last time I got it to re-sync, I lost the cursor. :-(

On the whole, it seems pretty bad.

I have a bunch more of these coming it, so I'd love to figure this
out. Windows has no problems, so something there seems to work
correctly. It's almost certainly an issue of the timing in the video
driver, but figuring it out could be very tricky.

I have seen no references to this problem on the XFree86 Xperts list, so
it may be a FreeBSD only problem.

R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: [email protected]			Phone: +1 510 486-8634

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