https://bugzilla.novell.com/show_bug.cgi?id=579932
https://bugzilla.novell.com/show_bug.cgi?id=579932#c57
--- Comment #57 from Andreas Nordal
Which is the last "good" kernel then? I found a live-CD with Kubuntu 9.10 and kernel "2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:05:01 UTC 2009 x86_64". Not good.
During rt-benchmarking and webbrowsing, this old kernel hangs as easily as with Opensuse 11.3 (yes, that top priority task was not scheduled for 196 seconds before my patience was up). However, it refuses to hang while playing audio (which is quite the opposite of os11.3). If anything is clear, it must be that the audio susceptibility was introduced later. Specifically between 2.6.32 and 2.6.33-rc7 (as originally found by Elmar and verified by me). If that is what we are after, I should be able to bisect it. I am willing to believe that all kernels using the necessary hpet, nohz, and whatnot, are "bad" on computers like mine. It's just that some kernels hang willingly (possibly eternally) like 2.6.31-14 and 2.6.35.7, and some will only hang under heavy rt-benchmarking and wake up by itself (typically within a second), like 2.6.32.20 and the kernels of Fedora 14 and Kubuntu 10.10 (which is what I have now). If in newer kernels, the hangs are short, infrequent, maybe even tolerable for most users, maybe old kernels were like that also... We need to test some ancient live-CDs. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.