Re: Suspend-resume failure on Intel Eagle Lake Core2Duo

From: Martin Peres
Date: Fri Jul 28 2017 - 08:34:13 EST


On 27/07/17 10:36, Tomi Sarvela wrote:
On 26/07/17 17:26, Thomas Gleixner wrote:
On Wed, 26 Jul 2017, Martin Peres wrote:
On 25/07/17 10:01, Tomi Sarvela wrote:
On 24/07/17 19:37, Martin Peres wrote:
On 24/07/17 19:35, Thomas Gleixner wrote:
On Mon, 24 Jul 2017, Martin Peres wrote:
On 24/07/17 18:28, Thomas Gleixner wrote:
Output of 'cat /proc/interrupts' and a description what kind of
'old' Intel
platform that is.

Sorry, I should have repeated the name outside of just the subject of
the
email. It is an Intel Eagle Lake Core2Duo.

I hoped you would give me a little bit more details, but I Gurgled it
now. I try to find such a beast and look what's wrong there. If I can't
find one, I'll come back with some debug patches.

Ha, sorry!

Here is all the info I have:
- Hardware: HP Compaq 8000
- CPU: Eagle Lake Core2Duo E7500

As mentioned, it's HP Compaq 8000 Elite, desktop tower in most basic
configuration: one SATA SSD, 4GB memory and so on. Most recent BIOS from
around 2012, no UEFI.

If you have proposed fix for the issue, I'll be happy to test them.

Best regards,

Thanks for the information Tomi.

Thomas, any update on this? Another user reported the problem:

Not yet.

"I have the same thing on an old cheap laptop.
model name : Intel(R) Core(TM)2 CPU
cpu family : 6
model : 15

Previously, this never happened on the kernel series 4.{10,11,12}.
After reverted commit bf22ff45bed664 on 4.13-rc2, unfortunately it still hangs
when it wakes up.

So reverting that commit does not help. Does it help on your machine?

Yes. Reverting it does not cause the machine to lock up on resume.

I haven't tested if the machine locks up later on, but at least it survives couple of s/r cycles

FYI, the user who reported reverting the patch was not sufficient actually now says he was hit by a second bug which he found.

So, a revert is always possible.

Cheers,
Martin