2012/1/23 Norbert Zeh <nzeh@xxxxxxxxx> > Hi folks, > > just a heads up (and maybe request for feedback whether anybody has seen > similar > issues with this kernel upgrade). The recent upgrade from kernel 3.1.9 to > 3.2.1 > produced two graphics-related issues: > > On my dual-Opteron Asus board with an NVIDIA GeForce GTX 460, the X server > fails > to start and says that it cannot initialize the device at PCI 4:0:0 (i.e., > my > NVIDIA card). Downgrading to 3.1.9 fixes this issue. > > On my Core i7 Dell Latitude 6510 laptop using the on-chip graphics chip > and the > 1920x1080 laptop screen, everything is fine until I suspend the machine to > RAM. > When resuming, I get a black screen and not even rebooting brings the > screen > back to life. I have to turn the machine off and then back on. > > In contrast, my Core i7 desktop at home with an NVIDIA Quadro NVS 450 > works just > fine with the 3.2.1 kernel. > > I'm in the process of bisecting these issues (currently working on the > laptop > issue). I remember that back in the kernel 2.6.3x days, it took a long > time for > the Dell 6510 with 1920x1080 display and Intel graphics to boot without a > black > screen at all, and I seem to recall that this was because the patch that > made it > work apparently didn't do what it was supposed to do "right". Maybe they > now > found a way to do it right, only it doesn't work, at least after a suspend. > > Note that, even though I get a black screen after suspending, the machine > is > otherwise alive, as I can blindly switch to a TTY and reboot the machine > cleanly > from there. Bisecting is proving a bit painful because quite a few > intermediate > versions I'm testing result in a straight kernel panic after suspend. > > Cheers, > Norbert > > -- > > () ascii ribbon campaign - against html e-mail > /\ www.asciiribbon.org - against proprietary attachments > Erh... Did you blacklist nouveau on your laptop or not ? Just a guess of course, cause it looks like a kmod bug I saw when it was in testing... -- Frederic Bezies fredbezies@xxxxxxxxx
