https://bugzilla.novell.com/show_bug.cgi?id=285914 Summary: Sound hangs on CPU frequency change Product: openSUSE 10.3 Version: Alpha 5 Platform: x86-64 OS/Version: openSUSE 10.2 Status: NEW Severity: Normal Priority: P5 - None Component: Sound AssignedTo: tiwai@novell.com ReportedBy: ray@openland.cz QAContact: qa@suse.de Found By: --- First of all I must say, that I am using openSUSE 10.2, but I have selected openSUSE 10.3 product, because I am using latest kernel from HEAD repository. Hardware Environment: Asus A6Km Software Environment: e.g. Amarok audio player Problem Description: I have Asus A6Km with AMD Turion 3200+. It has Realtek ALC650 integrated sound card and is working fine. Recently, I bought Creative Sound Blaster Live! 5.1 24-bit External for this laptop, because I have already one connected to my desktop computer (openSUSE 10.2 x86) and works fine too. However, when I connect Sound Blaster to my laptop, sound hangs randomly. I spent lot of time finding the reason, because there was nothing in logs, dmesg etc. Finally I found, that it is caused by CPU frequency scaling. When CPU speed is changed, than sound hangs - to reboot help only disconnection of Sound Blaster. When I fix CPU frequency, than Sound Blaster works like the other one in my desktop computer - fine. I found only two refs describing similar/same problem: http://www.linuxforums.org/forum/linux-laptops/63126-sound-problems-cpu-step... http://alsa.opensrc.org/Tascam_US-224 Steps to reproduce: 1) Connect Sound Blaster Live! 5.1 24-bit External 2) start some audio output with your favorite player 3) wait on frequency change 4) Sound hangs 5) For successful reboot, it is necessary to disconnect Sound Blaster Hope, you can help me. If you will need any other info, just ask me. I also submit bug to Alsa bugzilla (ID: 0003097) month ago and kernel bugzilla (ID: 8648), but there were no response. I am not sure whether this is sound subsystem related issue or USB subsystem issue (my laptop has SIS chipset, which is not so often used like others). May be I am absolutely wrong putting this bug report to this bugzilla, so if anyone from Novell staff decide, that this report is not related to this bugzilla, but only to kernel/alsa bugzilla, feel free to close it. -- 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.