Can't suspend on Surface Pro 3

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[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-utopic/

it looks like the SP3 legitimately does not expose the S3 state, and instead only allows MS's Connected Standby / InstantGo spec. As such there are two issues here that I can see:
1) pm-utils does not fall back on freeze
2) freeze state is using much more power than connected standby does on windows.

Let's restrict this bug to the first one as it's a couple of lines of bash to fix. Should I reassign this myself?

Status changed to 'Confirmed' because the bug affects multiple users.

What couple of lines of bash would fix this with regards to pm-utils?

What about supporting the real thing, ie "connected standby" or "InstantGO" function. Isn't it yet supported by linux kernel? Without this and without real S3 state, linux won't be really useful on a SP3 I'm afraid.

Akdor 1154, could you please execute the following via a terminal in order for the necessary debugging information to be attached:
apport-collect 1380076

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also here is the "couple of lines of bash" referenced before that makes pm-utils fall back to freeze if nothing else is available.

Akdor 1154, please do not toggle attachments as a patch unless it's fixing the originally reported issue (not a WORKAROUND, hack, etc.) and is ready to be accepted into the Ubuntu repositories as outlined in https://wiki.ubuntu.com/Bugs/Patches .

Despite this, could you please test the latest mainline kernel via 3.18-rc7 and advise to the results?

Also, could you please provide the code you use to enable your keyboard?

Hi,
Sorry, I thought that was just for categorization of attachments.
I would argue that it DOES fix the issue at hand properly, though; the SP3 does not expose any support for S3, only for MS/Intel's InstantGo. Linux's freeze method is thus legitimately the only suspend state available*. One would then expect that pm-utils uses this suspend state if it is the only one available, and my patch addresses that directly.

Anyway, 3.18-rc7 behaves identically. The keyboard patch (against 3.18, it doesn't apply automatically against 3.16 but it's trivial to backport) is at
http://www.spinics.net/lists/linux-input/msg34918.html

*S3 support is apparently possible if you enable the Hyper-V hypervisor but I have not yet explored this avenue.

P.S. just done some more reading, looks like my previous footnote was false; using Hyper-V does not expose S3, it simply hibernates immediately instead of suspending.

Jarrad

Akdor 1154, could you please provide the direct URL to the git Utopic Unicorn kernel you are using?

I made Akdor's pm-functions patch using 3.19RC3. Suspend did not change at all; it still bounced right back. Note that this kernel is unaware of the battery (I've read that 3.16 kernels don't have that problem) so maybe there is some interaction there.

I got that wrong yesterday, I think. IWhen the freeze patch is installed, it seems to do something akin to suspending, but I haven't figured out how to get it back (not power button or mouse movement). Instead you have to hold the power button long enough to kill it and then start over. Note that this computer bounces back in Windows 8.1 when you try "sleep". I understood that a kernel patch had fixed that, but I'm up to date with Windows updates and that's what I see.

Kernel bug 84651 addresses the power button issue. As of today it is still being tested. On my computer (now running 4.0-RC4 with patches but NOT the freeze patch from comment 26) suspending still bounces back, but with their patch it goes to the lock screen mode.

I will now try putting that in and see if the it is possible to both suspend and resume.

With the freeze patch installed and the power button patch in the kernel it can still fail to stay suspended. However I think there are two causes in my system and without them it will stay frozen at least until there is a power glitch:
- Bluetooth on, even with nothing paired, is certain to cause return from freeze
- Some things on USB can cause return from freeze (I had a USB hub and a card reader dongle and removed them both so I don't know which did it). Note that my Microsoft wireless mouse & keyboard (which has a tiny USB transceiver) does not cause any trouble.

Keith McClelland, it would help immensely if you filed a new report via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

I have created bug 1436620. It's a bit of a messy situation but I hope I described it well enough.

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