fredbezies [2012.01.23 0736 +0100]: > 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... No. I may be wrong, but I don't think this is needed here because the laptop has an Intel graphics chip. On the two NVIDIA boxes, nouveau is blacklisted. I really think this is a kernel regression because everything works as it should with 3.1.9 but not with 3.2.1. Apart from switching the kernel, I didn't touch any settings and the systems are fully up to date. - Norbert > > -- > Frederic Bezies > fredbezies@xxxxxxxxx -- () ascii ribbon campaign - against html e-mail /\ www.asciiribbon.org - against proprietary attachments
