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Date: Wed, 11 Jan 2017 10:41:40 +0100 From: Paul Menzel <pmenzel@...gen.mpg.de> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Cc: Jan Niehusmann <jan@...dor.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Thorsten Leemhuis <linux@...mhuis.info>, Daniel Blueman <daniel@...ra.org>, Len Brown <len.brown@...el.com>, Tomas Winkler <tomas.winkler@...el.com>, Alexander Usyskin <alexander.usyskin@...el.com> Subject: Re: Dell XPS13 does not suspend with Linux 4.10-rc3 On 01/11/17 10:36, Greg Kroah-Hartman wrote: > On Wed, Jan 11, 2017 at 09:53:38AM +0100, Paul Menzel wrote: >> On 01/10/17 23:24, Jan Niehusmann wrote: >>> On Tue, Jan 10, 2017 at 09:43:31PM +0100, Jan Niehusmann wrote: >>>> And I bisected the issue to commit 7279b238ba, "mei: send OS type to the >>>> FW" >>> >>> Indeed, just disabling the FIXUP implemented by that commit fixes >>> suspend for me, with 4.10.0-rc3. Btw, this is on a Thinkpad x201s. >>> >>> (For the addressees newly added to cc, it seems like the mentioned >>> commit breaks suspend to ram on Dell XPS13 and Thinkpad x201s) >>> >>> --- a/drivers/misc/mei/bus-fixup.c >>> +++ b/drivers/misc/mei/bus-fixup.c >>> @@ -406,3 +406,3 @@ static struct mei_fixup { >>> MEI_FIXUP(MEI_UUID_WD, mei_wd), >>> - MEI_FIXUP(MEI_UUID_MKHIF_FIX, mei_mkhi_fix), >>> +// MEI_FIXUP(MEI_UUID_MKHIF_FIX, mei_mkhi_fix), >>> }; >>> >>> >>> I don't know what this may break, as the description of 7279b23 just >>> says: >>> "This workaround was added to support other broken OS and we need to >>> follow here." >>> >>> Unless there is a better justification, I think the commit should be >>> reverted, for now. >> >> Somebody else already created the bug 192051 in the Linux Kernel Bug Tracker >> [1]. > > There's a fix for this in my tree to go to Linus for 4.10-rc4. Yes, Tomas referenced it in the bug report. I test it on the Dell XPS13 (9360) now. I would have liked if it mentioned suspend issues, and the known broken devices in the commit message. That way, I would have found the commit more easily. Kind regards, Paul
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