Description of problem: Powertop reports that a 1000Hz timer is still active. This prevents the CPU from sleeping. Version-Release number of selected component (if applicable): kernel-2.6.24.3-12.fc8 How reproducible: Always Steps to Reproduce: 1. Boot Kernel 2. Sit at idle Actual results: ~1600 wakeups Expected results: ~500 or lower wakeups Additional info: Attaching lspci, dmesg, and powertop outputs. This does not happen on my Pentium 4 3ghz HT-enabled 32-bit machine. Same packages installed.
Created attachment 298174 [details] dmesg.txt
Created attachment 298175 [details] lspci.txt
Created attachment 298176 [details] powertop.txt
it's because of the IR receiver on your TV card. AFAICT, this is a limitation of the hardware (it doesn't appear to send an interrupt when it receives an IR event, so the kernel has to poll frequently to see if something happened). If we lower the polling frequency, we may end up missing events.