https://bugzilla.novell.com/show_bug.cgi?id=688024 https://bugzilla.novell.com/show_bug.cgi?id=688024#c1 --- Comment #1 from Samuel Ktr 2011-04-18 12:26:08 UTC --- Setting pm-profile to low_latency has no effect. The problem might be difficult to notice with most multi-thread applications. Here is an example using lame (single thread): lame test.wav test.mp3 ... 29x play/cpu lame test.wav test.mp3 ... 25x play/cpu (moving kde4-desktop widget around the screen during the lame run) lame test.wav test.mp3 ... 14x play/cpu (doing nothing while it runs) lame test.wav test.mp3 ... 13x play/cpu (29x = 32 seconds, 13x = 1m 5s) Hence it may well be that most people will not notice this problem, even though it's quite dramatic. -- 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.

Even if C3/etc are disabled from bios and boot parameter processor.max_cstate=2 Modern Intel CPUs are driven by the intel_idle driver with latest kernel. And fallback is acpi processor driver. If you want to disable C-states you can boot with:

modprobe acpi-cpufreq -> "FATAL: Error inserting acpi_cpufreq If you still have 11.2 installed, please double check whether acpi-cpufreq gets loaded there (lsmod |grep acpi). This might be related to Bug #688021: Thinkpad T400 becoming hot If in your case frequency is low by default your laptop is very slow, while on

https://bugzilla.novell.com/show_bug.cgi?id=688024 https://bugzilla.novell.com/show_bug.cgi?id=688024#c2 Thomas Renninger changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P5 - None |P2 - High Status|NEW |NEEDINFO InfoProvider| |samuel@raa.to AssignedTo|trenn@novell.com |kernel-maintainers@forge.pr | |ovo.novell.com --- Comment #2 from Thomas Renninger 2011-04-27 08:18:03 UTC --- processor.max_cstate=1 intel_idle.max_cstate=0 the ThinkPad the default freq might be the highest and it's running hot. Just a guess for now, but acpi-cpufreq should load on all latest Intel systems. You can also install cpupower package from this repo: http://download.opensuse.org/repositories/home:/trenn/openSUSE_Factory and try: cpupower monitor which should give you an overview at which frequency you are running, not sure if /proc/cpuinfo can be trusted in this case. -- 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.

https://bugzilla.novell.com/show_bug.cgi?id=688024 https://bugzilla.novell.com/show_bug.cgi?id=688024#c3 Samuel Ktr changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW InfoProvider|samuel@raa.to | --- Comment #3 from Samuel Ktr 2011-04-29 21:44:21 UTC ---

If you want to disable C-states you can boot with: Thanks! This hack saves me hours in a day. Although the fans are loud as one can expect. I wish there would be a "sensitivity" parameter for entering out of C0, which would easily fix this problem.

If you still have 11.2 installed, I don't have it installed. I only have the openSUSE 11.4-64bit (default repos).

If in your case frequency is low by default your laptop is very slow Not a laptop in my case. A desktop computer.

You can also install cpupower package from this repo: Yast complains: "cpufrequtils-bench-008-5.1.x86_64 requires libcpufreq.so.0()(64bit), but this requirement cannot be provided"

Please tell me more what can I do to help. -- 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.

https://bugzilla.novell.com/show_bug.cgi?id=688024 https://bugzilla.novell.com/show_bug.cgi?id=688024#c5 Jeff Mahoney changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED CC| |jeffm@suse.com Resolution| |WONTFIX --- Comment #5 from Jeff Mahoney 2012-08-02 11:55:39 EDT --- With the coming release of openSUSE 12.2, openSUSE kernel developers are focusing their efforts there. Reports against openSUSE 11.4 and prior will not get the attention needed to resolve them before openSUSE 12.2 is release and openSUSE 11.4 becomes unmaintained. Please re-test with openSUSE 12.1 or openSUSE RC2+ and re-open with an updated Product if you still encounter your issue. We apologize for this issue not getting the attention it deserves but we are focusing our resources in the area where they will have the most impact for our users. We're working hard to make openSUSE 12.2 the best openSUSE release yet! -- 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.