> On Wed, Mar 12, 2008 at 6:22 PM, dpet <activecs@xxxxxxxxxxxxx> wrote: > > I have not been able to get the suspend/ resume to work. The > > cycle seems to work except that the backlight does not light. I > > have tried "quirks" and combinations of them without effect > > (obviously not every combination!). It used to work until "several > > kernels ago", but I didn't record when it stopped. > > The video card is Nvidia 7900, using the Livna driver, and > > currently kernel 2.6.24.3-12.fc8. > > Thanks > > DP > > South Australia > > > I've suffered through this with a Latitude D820. Suspend is working > now, and I'm not an expert engineer, but I can tell you my experience. > I have been through this big adventure several times, suspend is > working on Dell Latitude D820 at the moment. > > The suspend quirks definitely do not work for Nvidia's proprietary > driver. I recall being really upset after doing all of that quirks > stuff and, in the end, learning that those comments are only for the > nv driver, not for nvidia. > > I've been using Nvidia cards in laptops for about 10 years and I've > accumulated a little list of things I do to avoid the black screen > upon resume. > > Note the NvAGP setting in the /etc/X11/xorg.conf file. > It used to be absolutely required to get the video to work again, but > I don't know if it is still needed. > But I sure as hell do it. > > > Section "Device" > Identifier "Videocard0" > Driver "nvidia" > Option "NvAGP" "1" > Option "TwinView" > # Option "MetaModes" "1024x768, 1024x768" > # Option "MetaModes" > "1280x1024,1400x1050;1280x1024,1280x1024,1024x768,1024x768" > Option "TwinViewOrientation" "Clone" > ## Following vital to allow 1400x1050 mode > Option "AddARGBGLXVisuals" "True" > EndSection > > Here's another thing. We want the Nvidia AGP to be used, and that AGP > is compiled into the Fedora Kernel. But the code is smart and if you > tell it to not load, it won't. Look in /etc/grub.conf. In there, I > have options to try to stop the system's agp. I want the Nvidia agp, > which is the one that can suspend & resume. > > title Fedora (2.6.24.3-22.fc8) > root (hd0,2) > kernel /vmlinuz-2.6.24.3-22.fc8 ro root=LABEL=/laproot agp=off > agpgart=off usbcore.autosuspend=-1 > initrd /initrd-2.6.24.3-22.fc8.img > > I forget what usbcore.autosuspend is fixing, but it was something > really horrible about 2 months ago. I've got to start writing some of > this down... > > As I recall, there were many possible causes of that no-video upon > resume. It is VITAL you stop the system from trying to use vbetool > at all when it resumes. If you have been following the quirks guide, > I'm afraid you were probably putting the vbetool stuff back in, and > you shouldn't have. It used to be I had to go in and find the acpi > resume script and comment that vbetool out. The gnome-power-manager > now checks for the Nvidia and it does not try vbetool in that case, or > it did last time I read the source code about 3 months ago. I'm a > little frustrated I can't find that now. The bits of functionality > seem to run around in the file system between /etc/udev, /etc/acpi, > and I don't know what else. > > Here's something to check. Look in this file: > > /etc/acpi/events/video.conf > > # Configuration to turn on DPMS again on video activity, needed for > some # laptops. Disabled by default, uncomment if your laptop display > stays blank # after you close and open the lid. > > #event=video.* > #action=/usr/sbin/vbetool dpms on > > Double check to make sure it is commented out. > > It will definitely not work with the nvidia driver. > > The Nvidia company has a very active forum for discussion. You might > check there. When I have trouble, I always go there. Especially since > Fedora is not responsible for commercial Nvidia drivers. > > http://www.nvnews.net/vbulletin/forumdisplay.php?s=&forumid=14 > > > PJ > >-- >Paul E. Johnson >Professor, Political Science >1541 Lilac Lane, Room 504 >University of Kansas Thank you for your time and generosity in supplying this information. I haven't had time to try it all yet, but it gives me direction to proceed. Regards DP
