FB: vesafb garbled after using X11 with nv driver

FB: vesafb garbled after using X11 with nv driver

[Ralf Hildebrandt]

I use the nv driver in XFree and the vesafb for the framebuffer console.
vesafb works fine, I get the bootlogo and all during boot. 

Once X11 starts up and I want to switch back to the framebuffer
console using CTRL-ALT-F1, the framebuffer is garbled. The screen is
flickering, as if the vertical synchronisation is lost. Colors seem to
be OK, I get grey garbage on black background.

Switching back to X11 using ALT-F7 works OK, the X11 screen looks fine.

I made two screenshots to illuminate what I'm seeing:
http://www.stahl.bau.tu-bs.de/~hildeb/bugreport/dsc02089.jpg
http://www.stahl.bau.tu-bs.de/~hildeb/bugreport/dsc02090.jpg
(watch out, high resolution)

It's not entirely clear if it's an issue of the nv driver or the vesafb
in the kernel.

-- 
Ralf Hildebrandt (i.A. des IT-Zentrum)          Ralf.Hildebrandt@charite.de
Charite - Universitätsmedizin Berlin            Tel.  +49 (0)30-450 570-155
Gemeinsame Einrichtung von FU- und HU-Berlin    Fax.  +49 (0)30-450 570-962
IT-Zentrum Standort CBF                 send no mail to spamtrap@charite.de

Re: FB: vesafb garbled after using X11 with nv driver

[Christian Hesse]

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On Thursday 11 November 2004 22:55, Ralf Hildebrandt wrote:
> I use the nv driver in XFree and the vesafb for the framebuffer console.
> vesafb works fine, I get the bootlogo and all during boot.
>
> Once X11 starts up and I want to switch back to the framebuffer
> console using CTRL-ALT-F1, the framebuffer is garbled. The screen is
> flickering, as if the vertical synchronisation is lost. Colors seem to
> be OK, I get grey garbage on black background.
>
> Switching back to X11 using ALT-F7 works OK, the X11 screen looks fine.
>
> I made two screenshots to illuminate what I'm seeing:
> http://www.stahl.bau.tu-bs.de/~hildeb/bugreport/dsc02089.jpg
> http://www.stahl.bau.tu-bs.de/~hildeb/bugreport/dsc02090.jpg
> (watch out, high resolution)
>
> It's not entirely clear if it's an issue of the nv driver or the vesafb
> in the kernel.

I have a similar problem. With open source nv and vesafb the virtual terminal 
looks like this if I switch back to the framebuffer:

http://linux.eworm.net/nv_offset.jpg

Everything is moved to the left, the right area is repeated some time and 
fills the rest of the screen.

As binary nvidia module works without this problem I support it's a problem of 
nv...

-- 
Christian Hesse

geek by nature
linux by choice

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Re: FB: vesafb garbled after using X11 with nv driver

[Ralf Hildebrandt]

* Christian Hesse <christian.hesse@linuxob.de>:

> I have a similar problem. With open source nv and vesafb the virtual terminal 
> looks like this if I switch back to the framebuffer:
> 
> http://linux.eworm.net/nv_offset.jpg

You're way better of than I am, since you can SEE something.
 
> As binary nvidia module works without this problem I support it's a problem of 
> nv...

Same here, the binary nvidia module doesn't give me that problem.
So it's nv, and probably OT for lkml. Sorry for the noise, guys.

-- 
Ralf Hildebrandt (i.A. des IT-Zentrum)          Ralf.Hildebrandt@charite.de
Charite - Universitätsmedizin Berlin            Tel.  +49 (0)30-450 570-155
Gemeinsame Einrichtung von FU- und HU-Berlin    Fax.  +49 (0)30-450 570-962
IT-Zentrum Standort CBF                 send no mail to spamtrap@charite.de