It only solves the issue when chatting. For voice-calls it's still the same problem.
So it seems to be pretty sure that this issue is related to audio output (and maybe also input). But on the other hand the problem occurs with the ALSA as well as the OSS kernel drivers. Did anyone try if 2.6.20-vanilla solves this issue? By the way - here is some more information on the replies which I received to my LKML posting (http://lkml.org/lkml/2006/10/11/200) - I just noticed that this mails weren't posted on the list. The discussion is between another user experiencing the problem and one of the kernel developers. Unlike this users system my system also completely hangs with 2.6.19. -------- --------- -------- -------- Currently I'm using 2.6.19-rc4 and Skype now behaves different. When calling, the system load increases to 100% and audio stutters, but there is no lockup. I'll test 2.6.19-rc5 during the weekend. -------- --------- -------- -------- It'd be useful if you could grab a kernel profile when the system load is high: - Enable CONFIG_PROFILING - Boot with `profile=1' on the kernel command line - Run: readprofile -r sleep 10 readprofile -n -v -m /boot/system.map | sort -n -k 3 | tail -40 Or, if oprofile is working: #!/bin/sh sudo opcontrol --stop sudo opcontrol --shutdown sudo rm -rf /var/lib/oprofile sudo opcontrol --vmlinux=/boot/vmlinux-$(uname -r) sudo opcontrol --start-daemon sudo opcontrol --start sleep 10 sudo opcontrol --stop sudo opcontrol --shutdown sudo opreport -l /boot/vmlinux-$(uname -r) | head -50 -------- --------- -------- -------- > Here is the oprofile log. Seems to be acpi related? > > CPU: CPU with timer interrupt, speed 0 MHz (estimated) > Profiling through timer interrupt > samples % symbol name > 709 44.2848 acpi_pm_read > 232 14.4909 schedule > 164 10.2436 system_call > 61 3.8101 __wake_up > 48 2.9981 __copy_to_user_ll I'd say skype is doing something dumb there. The machine is apparently madly context-switching and reading the time. -------- --------- -------- -------- > I just upgraded to 2.6.19 and it's still the same behaviour (system > hangs). Does it work for you when using 2.6.19 (non-rc)? Yes, 2.6.19 works like the -rc kernels. I did not encounter any lockups with these kernel. But I have to restart skype after some time to be able to use audio. Otherwise, the audio quality is getting worse and system load increases. I don't know what skype does, but maybe it is related to skypes attempts to prevent debugging... -------- --------- -------- -------- -- BUG() report in getnstimeofday: soft lockup https://launchpad.net/bugs/53216 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
