Bug 8703
Summary: | [PATCH] Enable C3 Power State on Dell Inspiron 8200 | ||
---|---|---|---|
Product: | ACPI | Reporter: | Dag Bakke (dag) |
Component: | Power-Processor | Assignee: | Zhang Rui (rui.zhang) |
Status: | CLOSED PATCH_ALREADY_AVAILABLE | ||
Severity: | normal | CC: | acpi-bugzilla, Matt_Domsch |
Priority: | P1 | ||
Hardware: | All | ||
OS: | Linux | ||
Kernel Version: | 2.6.21-rc5 | Subsystem: | |
Regression: | --- | Bisected commit-id: | |
Attachments: |
patch to enable C3
dmesg dmidecode acpidump updated patch for 2.6.24-rc8 |
Description
Dag Bakke
2007-07-02 08:57:18 UTC
Created attachment 11918 [details]
patch to enable C3
Created attachment 11919 [details]
dmesg
Created attachment 11920 [details]
dmidecode
Created attachment 11921 [details]
acpidump
BIOS description (all revisions) for the machine in question: http://www.bay-wolf.com/bios/I8200A11.TXT Patch written by Arjan van de Ven. Tested-by: Dag Bakke <dag@bakke.com> Please submit future patches via email,thanks. Who at Dell has stated that they agree this is a Dell BIOS bug? How do we know that Windows sees C3 on this box -- perfmon? If this is a known BIOS bug, why has Dell not fixed it? I am sorry for not editing out the relevant comment from the patch before submitting it. I never meant to expressly state that it is a bug in the BIOS. I can only offer my observation, limited to a sample of one machine with a specific BIOS version and CPU model. It WFM. I do have a vague recollection that you (Len) or someone else with the ACPI-hat on has said something about that other OS accepting stuff which violates the ACPI spec. Created attachment 14492 [details]
updated patch for 2.6.24-rc8
updated patch for 2.6.24-rc8
Dell replied off-line that they disabled C3 on this system on purpose because of its chipset. If you are able to measure a power savings by 2nd guessing Dell, without any stability problems, then please document that here and re-open this sighting. |