Bug 249930
| Summary: | No C3/C4 sleep and high power consumption on thinkpad t43 with 2.6.22.1-27 | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Leon Xu <ylxu72> | ||||
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> | ||||
| Status: | CLOSED INSUFFICIENT_DATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 7 | CC: | chris.brown | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | i686 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2008-01-10 17:17:33 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Created attachment 160155 [details]
dmesg info
Hello Leon, 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 will try and assist you in resolving it if I can. 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 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 As indicated previously there has been no update on the progress of this bug therefore I am closing it as INSUFFICIENT_DATA. Please re-open if the issue still occurs for you and I will try to assist in its resolution. Thank you for taking the time to report the initial bug. |
Description of problem: CPU cannot enter C3/C4 sleep with kernel 2.6.22-1.27 and 2.6.22-1.33, and higher battery power consumption reported by PowerTop: 2.6.22-1.33 at 18.1 watts vs. 2.6.21-1.3228 at 13.5w. Kernel 2.6.21-1.3228 has no this issue, and it run with high percent C4 sleep and lower power consumption. PowerTop output with kernel 2.6.22-1.33: PowerTOP version 1.7 (C) 2007 Intel Corporation Cn Avg residency (2s) P-states (frequencies) C0 (cpu running) ( 3.9%) C1 0.0ms ( 0.0%) C2 8.5ms (96.1%) C3 0.0ms ( 0.0%) C4 0.0ms ( 0.0%) Wakeups-from-idle per second : 113.0 Power usage (ACPI estimate): 18.1W (2.2 hours) Top causes for wakeups: 53.3% ( 60.5) <interrupt> : yenta, uhci_hcd:usb1, eth0, radeon@pci:0000: 8.8% ( 10.0) scim-launcher : schedule_timeout (process_timeout) 4.4% ( 5.0) tpb : do_nanosleep (hrtimer_wakeup) 4.4% ( 5.0) gnome-terminal : schedule_timeout (process_timeout) 4.0% ( 4.5) Xorg : do_setitimer (it_real_fn) 3.5% ( 4.0) <interrupt> : libata Version-Release number of selected component (if applicable): 2.6.22-1.27 and later How reproducible: Thinkpad T43 run kernel 2.6.22-1.27 or later (powered by battery), check power consumption with PowerTop. Steps to Reproduce: 1. Update to kernel 2.6.22-1.27 or newer, and reboot to run the kernel 2. Turn off Wi-Fi, unplug any usb devices, unplug AC Adapter and run the laptop powered by battery. 3. Actual results: Battery (6 cells, 45 Wh) last time shorten about 50 minutes (3 hours to 2.2 hours) Expected results: Additional info: