when the system freeze, also the keyboard is frozen, so it's not possible to switch to another virtual terminal... but if you have another pc you can connect via ssh to the frozen one.. are you sure it's the same bug even if you were able to go to another vt?
On Sat, Mar 22, 2008 at 3:52 AM, Bryce Harrington <[EMAIL PROTECTED]> wrote: > @luis, thanks for the backtrace; it is interesting that this does not > match the backtrace posted by Matt (comment #52), although they're both > ending with "#0 0xffffe410 in __kernel_vsyscall ()". > > For everyone else, the #1 most important thing you can post to help with > this specific bug is backtraces (see > https://wiki.ubuntu.com/DebuggingXorg). lspci, Xorg.0.log, and > xorg.conf don't give the info we need here (although it doesn't hurt to > post them). > > @luis, the -dbg and -dbgsym packages aren't the same thing, but for our > purposes either will suit our needs, and -dbg are typically fine for > Xorg. From your backtrace, all function calls are displayed so you've > done the correct thing. It is not unknown for issues to change when a > debug package is installed - sometimes this affects the timings and can > delay things long enough for deadlocks to break, or race conditions to > disappear. However those are rare, and I doubt will affect our > debugging. > > This particular backtrace is describing a fault during output flushing. > I suspect this is a secondary issue (i.e., X failed on our unknown > issue, then you connected and told it to keep going, and it did for a > bit, but the original issue left the system in a bad state, so it > crashed again later). So what we need is a backtrace for that original > lockup. > > @luis, please see if you can capture a few more backtraces, perhaps > taking them in different ways (such as immediately after attaching, > before doing cont). > > I was sort of able to reproduce a lockup on an ATI R350 9800 using > firefox 3, without Compiz enabled. In this case, I was able to switch > to a virtual terminal (ctrl-alt-f1) and pkill firefox, and everything > came back. I could reproduce that situation at will (seems to have > something to do with ff3's URL autocomplete dropdown). After re-reading > through every comment on this bug, I suspect that perhaps it is a client > application triggering this bug (screensavers, games, office > applications, proprietary software, compiz, etc. all are potential > suspects). So a secondary troubleshooting approach after this problem > occurs might be to go to a vt and kill apps, and see if that unlocks the > system. If it does, then attaching to that process (just like in the > DebuggingXorg procedure) and getting a backtrace may be of use. > > Ultimately, what we're looking for is a common function call and/or > invalid function parameters that result in jamming up the system. After > that, we can then explore what in the driver is failing under those > circumstances. > > For those of you who haven't given up and gone back to 'doze and that > are willing to help in this work of troubleshooting down deep, thanks > ahead of time! > > -- > X freezes when compiz is enabled on ATI cards > https://bugs.launchpad.net/bugs/108527 > You received this bug notification because you are a direct subscriber > of the bug. > -- Religion easily has the best bullshit story of all time. Think about it. Religion has convinced people that there's an invisible man…living in the sky. Who watches everything you do every minute of every day. And the invisible man has a list of ten specific things he doesn't want you to do. And if you do any of these things, he will send you to a special place, of burning and fire and smoke and torture and anguish for you to live forever, and suffer, and burn, and scream, until the end of time. But he loves you. He loves you. He loves you and he needs money. -- X freezes when compiz is enabled on ATI cards https://bugs.launchpad.net/bugs/108527 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
