Description of problem: System freezes after minutes or tens of minutes when powertop is running. It stops answering completely - screen, keyboard, no ICMP response... This system runs continually without problem for a week (from fresh F7 install) and with > 100 days uptime with FC6. Yesterday I started to play with powertop and got three times freeze after while. Version-Release number of selected component (if applicable): 2.6.21-1.3194.fc7 powertop-1.5-1.fc7 powertop 1.6 (compiled from source) How reproducible: three successful trials Steps to Reproduce: 1. run powertop and wait for freeze 2. 3. Actual results: freeze Expected results: powertop running for hours without problem Additional info: powertop was in xterm window and IceWM session P4, mobo ASUS P4P800-VM, 1GB RAM, Radeon 9200 (radeon driver)...
Hello, I'm reviewing this bug as part of the kernel bug triage project, an attempt to isolate current bugs in the fedora kernel. http://fedoraproject.org/wiki/KernelBugTriage I am CC'ing myself to this bug and have re-assigned it to the powertop maintainer who may wish to add their comments. You may also like to update to the latest version of powertop. There hasn't been much activity on this bug for a while. Could you tell me if you are still having problems with the latest kernel? If so, you may wish to try the following to assist in its debugging: # For boot related issues we need as much info as possible, so removing quiet from boot flags is a good start. # Slowing down the speed of text output with boot_delay=1000 (the number may need to be tweaked higher/lower to suit) may allow the user to take a digital camera photo of the last thing on screen. # Booting with vga=791 (or even just vga=1 if the video card won't support 791) will put the framebuffer into high resolution mode to get more lines of text on screen, allowing more context for bug analysis. # initcall_debug will allow to see the last thing the kernel tried to initialise before it hung. # There are numerous switches that change which at times have proven to be useful to diagnose failures by disabling various features. * acpi=off is a big hammer, and if that works, narrowing down by trying pci=noacpi instead may yield clues * nolapic and noapic are sometimes useful * Given it's new and still seeing quite a few changes, nohz=off may be worth testing. (Though this is F7 and above only) # If you get no output at all from the kernel, sometimes booting with earlyprintk=vga can sometimes yield something of interest. # If the kernel locks up with a 'soft lockup' report, booting with nosoftlockup will disable this check allowing booting to continue. If the problem no longer exists then please close this bug or I'll do so in a few days if there is no additional information lodged. Cheers Chris
Hi, sorry for answering too late, but I haven't got your post by mail. I moved to Fedora 8 and problem is solved for me now - powertop runs for hours without problem. Thanks for your care. Michal