Linux 3.5 Kernel Power Regression Spotted

[phoronix]

Phoronix: Linux 3.5 Kernel Power Regression Spotted

Following yesterday's news of a massive power regression within the Linux 3.5 kernel, James Bottomley has uncovered the kernel commit causing excessive power usage...

http://www.phoronix.com/vr.php?view=MTE1MTI

[MonkeyPaw]

I don't understand a word he said, but as a Sandy Bridge notebook user, I say

[AJSB]

So, this is only affecting those Intel products ?!?

[schmidtbag]

hah well that was a quick spot, also kinda stupid to get everyone hyped-up about it when it only affects 1 crappy chipset

[DeepDayze]

Perhaps the logic within the commit has a bug that ends up burning power due to bad side interactions so hopefully it'll get reworked

[Hamish Wilson]

Good to see a quick return on issues like these.

[AlbertP]

So, this is only affecting those Intel products ?!?

This time it's not a vague BIOS issue but an Intel graphics driver problem indeed. And it is clear what causes it. So I think it'll be fixed or reverted in Ubuntu 12.10 at least.

[speculatrix]

I've been holding back, staying on kernel 3.4, rather than upgrading to 3.5.3 in the opensuse12.1/tumbleweed repository

any news on a fix? I had a look at commit logs but saw nothing obvious :-(