[Bug 13145] Processor does not go below C2 if mouse (uhci) is plugged in.
http://bugzilla.kernel.org/show_bug.cgi?id=13145 --- Comment #15 from Anonymous Emailer anonym...@kernel-bugs.osdl.org 2009-04-24 17:43:33 --- Reply-To: l...@kernel.org That bug was fixed by commit fc2e4009300088813c3be2de80b01ddc239e cpuidle: update the last_state acpi cpuidle reflecting actual state entered which shipped in 2.6.27 Venki pointed out that fc2e4009300 shipped in 2.6.27.15. It was backported from addbad46ed0906cd584784423b9d0babc7476446 which shipped in 2.6.28 -Len Brown, Intel Open Source Technology Center -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. -- Crystal Reports #45; New Free Runtime and 30 Day Trial Check out the new simplified licensign option that enables unlimited royalty#45;free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
[Bug 13145] Processor does not go below C2 if mouse (uhci) is plugged in.
http://bugzilla.kernel.org/show_bug.cgi?id=13145 Len Brown len.br...@intel.com changed: What|Removed |Added Status|RESOLVED|CLOSED -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. -- Crystal Reports #45; New Free Runtime and 30 Day Trial Check out the new simplified licensign option that enables unlimited royalty#45;free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
[Bug 13145] Processor does not go below C2 if mouse (uhci) is plugged in.
http://bugzilla.kernel.org/show_bug.cgi?id=13145 Venkatesh Pallipadi venkatesh.pallip...@intel.com changed: What|Removed |Added CC||venkatesh.pallip...@intel.c ||om --- Comment #14 from Venkatesh Pallipadi venkatesh.pallip...@intel.com 2009-04-23 23:31:17 --- 2.6.26 also detects the Bus Mastering activity and goes into C2 state instead of C3. But, it reports the time as C3 time. Thats the reason powertop shows time spent in C3, even though in reality CPU is in C2. This patch cpuidle: update the last_state acpi cpuidle reflecting actual state entered fixes the C-state reporting bug and now we correctly report the time being spent in C2 and not C3. So, this is not a bug. This is rather a bug fix for wrong C-state reporting in powertop in earlier kernels. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. -- Crystal Reports #45; New Free Runtime and 30 Day Trial Check out the new simplified licensign option that enables unlimited royalty#45;free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
[Bug 13145] Processor does not go below C2 if mouse (uhci) is plugged in.
http://bugzilla.kernel.org/show_bug.cgi?id=13145 Venkatesh Pallipadi venkatesh.pallip...@intel.com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||INVALID -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. -- Crystal Reports #45; New Free Runtime and 30 Day Trial Check out the new simplified licensign option that enables unlimited royalty#45;free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects ___ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
[Bug 13145] Processor does not go below C2 if mouse (uhci) is plugged in.
http://bugzilla.kernel.org/show_bug.cgi?id=13145 Len Brown len.br...@intel.com changed: What|Removed |Added Status|NEW |ASSIGNED CC||acpi-bugzi...@lists.sourcef ||orge.net, ||len.br...@intel.com Component|USB |Power-Processor AssignedTo|g...@kroah.com |len.br...@intel.com Product|Drivers |ACPI -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. -- Stay on top of everything new and different, both inside and around Java (TM) technology - register by April 22, and save $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. 300 plus technical and hands-on sessions. Register today. Use priority code J9JMT32. http://p.sf.net/sfu/p ___ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
[Bug 13145] Processor does not go below C2 if mouse (uhci) is plugged in.
http://bugzilla.kernel.org/show_bug.cgi?id=13145 --- Comment #12 from Anonymous Emailer anonym...@kernel-bugs.osdl.org 2009-04-22 18:35:42 --- Reply-To: l...@kernel.org IIRC, C2-popup is supported since core architecture. The system (a T41) is unlikely support this. The T41 is an ICH4M, Pentium M system. C2 popup was not supported until ICH6M. Thus, when USB is active, this system should detect bus master activity (as displayed in /proc/acpi/processor/CPU/power) and should not enter C3 when such activity is (recently) present. Len Brown, Intel Open Source Technology Center -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. -- Stay on top of everything new and different, both inside and around Java (TM) technology - register by April 22, and save $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. 300 plus technical and hands-on sessions. Register today. Use priority code J9JMT32. http://p.sf.net/sfu/p ___ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
[Bug 13145] Processor does not go below C2 if mouse (uhci) is plugged in.
http://bugzilla.kernel.org/show_bug.cgi?id=13145 --- Comment #13 from Anonymous Emailer anonym...@kernel-bugs.osdl.org 2009-04-22 22:54:32 --- Reply-To: l...@kernel.org This is not a re-gression, it is a pro-gression:-) In the CONFIG_CPU_IDLE=y case, there was a bug where we would enter C3 even in the presence of bus master activity. That bug was fixed by commit fc2e4009300088813c3be2de80b01ddc239e cpuidle: update the last_state acpi cpuidle reflecting actual state entered which shipped in 2.6.27 I've reproduced this issue on my t41, and when i revert the the patch above from 2.6.27, we erroneously attempt to enter C3 in the face of bus master activity, just like we did in 2.6.25 and 2.6.26. Note that the CONFIG_CPU_IDLE=n case never had this bug, so you'd not see C3 with USB in that case even in older kernels. Note also that /proc/acpi/processor/CPU/power does not display any bus master activity for the CONFIG_CPU_IDLE=y case, even when such activity is present. Now that CONFIG_CPU_IDLE=y for ACPI always, I think we should simply delete that misleading field. thanks, Len Brown, Intel Open Source Technology Center -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. -- Stay on top of everything new and different, both inside and around Java (TM) technology - register by April 22, and save $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. 300 plus technical and hands-on sessions. Register today. Use priority code J9JMT32. http://p.sf.net/sfu/p ___ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
