[Bug 1449089] Re: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470
It's weird that the Compiz update would cause this. The only changes in the last Compiz SRU are a blacklist for Nvidia cards for disable X to GL syncs and the removal of a texturesCache in the animation plugin that caused issues on Nvidia cards and that's it. The texturesCache was unused and only caused issues in the Animation class destructor, so I fail to see how that could be causing this issue. And that's it, no other changes, so I'm really thinking Compiz is a victim here. Without any other clues such a core dump, it will not be easy to prove either way who's to blame though. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1449089 Title: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1449089/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1449089] Re: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470
After more research, this turns out to be a bizarre interaction of various things. The culprit is the intersection of this version of compiz and running older kernel versions. As soon as we updated to linux-image-3.13.0-49-generic, the problem went away. So I think it's still the case that something in the latest compiz update, at least on that one specific radeon card, is tickling a bug that was present at least as recently as 3.13.0-44, but went away some time between then and the current version. (I do see some radeon-specific notes in the changelog for the package, for the -45, -46, and -47 releases). (For unrelated reasons, a site-specific script to prune old kernel versions had the side effect, in Trusty, of removing linux-image- generic, due to changed dependencies between trusty and precise. As a result, machines didn't take kernel updates in a timely manner, which is why this bug got noticed, and the failure mode did coincide with the machines taking the latest compiz.) So feel free to close this, unless there's any further info you want. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1449089 Title: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1449089/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1449089] Re: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470
Thanks for the detailed update. I'll close this as Invalid. ** Changed in: compiz (Ubuntu) Status: Confirmed = Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1449089 Title: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1449089/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1449089] Re: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: compiz (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1449089 Title: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1449089/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1449089] Re: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470
You can try looking in /var/carsh and see if there is a compiz related crash in there. Also, could you post the relevant lines in your syslog? Sometimes, compiz segfaults due to buggy drivers as well. Was there any update to your graphics driver? Are you using fglrx or radeon for your graphics driver? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1449089 Title: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1449089/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1449089] Re: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470
Unfortunately we disable apport on our public workstations. I will try to reproduce it on a workstation with apport enabled and retrieve a crash file, if there is one. We do not use fglrx; we use the stock radeon (this is on 14.04.2, without the HWE stack), and the problem occurs on machines with kernel versions ranging from 3.13.0-32 to 3.13.0-46. The common denominator is the specific Radeon card, and the 20150313 update of compiz. I'll paste the syslog line shortly. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1449089 Title: Regression: compiz 1:0.9.11.3+14.04.20150313-0ubuntu1 segfaults on Radeon HD 7470/8470 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1449089/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
