[ltp] FIXED! Suspend/resume with T61p and nVidia Quadro FX 570M

[Grant Williamson]

David,
    are you talking about suspend to ram only or suspend to disk?

David A. Desrosiers wrote:
>
> After spending a couple of weeks testing thousands of different 
> options and configurations on my T61p to try to find out why it 
> wouldn't suspend/resume, I managed to come up with a working 
> configuration.
>
> The side-effect of this is that now X no longer randomly crashes on me 
> in the middle of whatever I'm doing (a known issue with nvidia_drv.so) 
> and now suspend and resume works with the nVidia Quadro FX 570M card 
> in my T61p.
>
> In order to stop X11 from crashing, I had to tell the nVidia driver to 
> disable 'glx' and 'dri' in Section "Module" of my xorg.conf. That 
> looks like this:
>
>     Section "Module"
>         Load           "freetype"
>         # snip other loaded modules
>
>         Disable        "glx"
>         Disable        "dri"
>         Disable        "fb"
>     EndSection
>
> Lower down under Section "Device", I have the following:
>
>     Section "Device"
>         Identifier     "Configured Video Device"
>         Driver         "nvidia"
>     #   Driver         "nv"
>         Option         "NvAGP"       "4"
>
>         Option         "MultiGPU" "AA"
>         Option         "TripleBuffer" "true"
>
>         BusID          "PCI:1:0:0"
>     EndSection
>
> The amount of configurable options for nVidia cards is staggering (77 
> separate Option params with various number of values and effects on 
> the overall performance of the system). I tried nearly all of them 
> with positive and negative effects. Then I started narrowing down the 
> least amount of options that had a direct affect on my crashes and 
> suspend/resume issue. That is represented in the above snippets.
>
> I can no longer use my fancy glx screensavers, but I don't care. I can 
> now suspend and resume, and X doesn't crash... (so far).
>
> I'm using v169.12 of the x86_64 driver from nVidia directly, if anyone 
> is interested in testing/duplicating my results.
>
> I'll post back if I have any updates on this.