Lenovo notebook ASPM issue is mentioned on internet, do something pls~

[enihcam]

Lenovo notebook ASPM issue (high power consumption issue) is mentioned on internet, do something pls~

http://www.phoronix.com/scan.php?page=news_item&px=OTk4NQ

[Rabauke]

I second that. I've got a 2522-W29. And many others are out there suffering from that issue. Please fix and provide an updated BIOS.

[whitecat]

Yes please do.

[rzrfreefr]

Please do too btw is LENOVO 20078JU a g470 ?

on lenovo-g470

grep FADT  /var/log/kern.log
Oct 18 19:31:42 lap kernel: [    0.516293] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
Oct 18 19:38:31 lap kernel: [    0.516313] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it

[sequence]

4313CTO is affected, proof is in kern.log

"ACPI FADT declares the system doesn't support PCIe ASPM, so disable it"

Additionally: ["Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored"

[dhdurgee]

09143YU is the same as above.

Dave

[rzrfreefr]

hi

since we dont have more info, do you guys have this entry in dmesg  on lenovo g470 :

"\_SB_.PCI0:_OSC invalid UUID"

please report your model and bios version 

is this related to our ASPM issue ? and can this be fixed by replacing DSDT ?

Regards

[dhdurgee]

There is now a kernel patch available that addresses this issue.  For those who want the details:

kernel patch for ASPM

[rzrfreefr]

I think I tested that patch but it looks that bug in BIOS prevent using it :

see the lenovog470 log at :

http://forums.lenovo.com/t5/Linux-Discussion/linux-on-lenovo-g470/m-p/648689/highlight/false#M3559