Re: nvidia fb flicker

Marc Koschewski
2005-11-28T13:20:25Z

* Antonino A. Daplas <adaplas@gmail.com> [2005-11-28 20:31:30 +0800]:

> Marc Koschewski wrote:
> > * Calin A. Culianu <calin@ajvar.org> [2005-11-26 00:02:46 -0500]:
> >
> >> Hi,
> >>
> >> This patch can be applied against 2.6.15-rc1 to add support to the
> >> nvidiafb driver for a few obscure (yet on-the-market) nvidia
> >> boards/chipsets, including various versions of the Geforce 6600 and 6200.
> >>
> >> This patch has been tested and allows the above-mentioned boards to get
> >> framebuffer console support.
> >>
> >> Thanks!
> >>
> >> -Calin
> >
> > Hi all,
> >
> > yesterday I compiled a 2.6.15-rc2 on one of my Inspirons (NVIDIA GeForce2 Go)
> > with nvidiafb. I just changed the fb to some 1600x1200 mode and thus seems to
> > work (the source states GeForce2 Go is supported and known). However, the
> > letters seems to 'flicker' in some way. Uhm, it's not really flickering, it's
> > more like the sinle dots a letter is made of seem to randomly turn on an off. I
>
> Can you try booting with video=nvidiafb:1600x1200MR@60?
>
> If that still does not work, can you open drivers/video/fbmon.c then change
> the line #undef DEBUG to #define DEBUG, recompile, reboot and post your
> dmesg?
>
> > one takes a closer look it seems like the whole screen is 'fluent' or something.
> > Does anybody know how to handle that? I didn't specify a video mode, but
> > 'video=vesafb:mtrr:3'.
> >
>
> No, remove any vga= and video=vesafb: strings in your boot options.

So, I just booted with the parameter given by you (and without vga= as usual), as
well as without any parameter. No change though.

Here's my relevant messages stuff with DEBUG enabled:

Nov 28 14:02:31 stiffy kernel: nvidiafb: nVidia device/chipset 10DE0112
Nov 28 14:02:31 stiffy kernel: nvidiafb: EDID found from BUS2
Nov 28 14:02:31 stiffy kernel: ========================================
Nov 28 14:02:31 stiffy kernel: Display Information (EDID)
Nov 28 14:02:31 stiffy kernel: ========================================
Nov 28 14:02:31 stiffy kernel: EDID Version 1.3
Nov 28 14:02:31 stiffy kernel: Manufacturer: SHP
Nov 28 14:02:31 stiffy kernel: Model: 138e
Nov 28 14:02:31 stiffy kernel: Serial#: 0
Nov 28 14:02:31 stiffy kernel: Year: 1990 Week 0
Nov 28 14:02:31 stiffy kernel: Display Characteristics:
Nov 28 14:02:32 stiffy kernel: Monitor Operating Limits: Detailed Timings
Nov 28 14:02:32 stiffy kernel: 160 MHz 1600 1664 1856 2112 1200 1201 1204 1250 -HSync -VSync
Nov 28 14:02:32 stiffy kernel:
Nov 28 14:02:32 stiffy kernel: Supported VESA Modes
Nov 28 14:02:32 stiffy kernel: Manufacturer's mask: 0
Nov 28 14:02:32 stiffy kernel: Standard Timings
Nov 28 14:02:32 stiffy kernel: 1600x1200@60Hz
Nov 28 14:02:32 stiffy kernel: Extrapolated
Nov 28 14:02:32 stiffy kernel: H: 75-75KHz V: 60-60Hz DCLK: 162MHz
Nov 28 14:02:32 stiffy kernel: Digital Display Input

Marc