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[Bug 1380076] Re: Can't suspend on Surface Pro 3

 

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.

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https://bugs.launchpad.net/bugs/1380076

Title:
  Can't suspend on Surface Pro 3

Status in linux package in Ubuntu:
  Incomplete
Status in pm-utils package in Ubuntu:
  Confirmed

Bug description:
  Suspend on surface pro 3 from GUI does not work. (Nothing happens)

  Doing it manually also fails, and nothing appears in dmesg:
  #echo "mem" > /sys/power/state

  Error while writing to stdout
  write_loop: Invalid argument

  And, more interestingly,
  #cat /sys/power/state

  freeze disk

  Using the not-so-good-and-apparently-unsupported
  #echo "freeze" > /sys/power/state

  does seem to successfully suspend, however I cannot resume from this
  (assumed to be a separate issue). Likewise, pm-hibernate seems
  somewhat functional.

  I am using a the utopic unicorn kernel compiled from git at
  kernel.ubuntu.com, with a tiny patch that is required for my keyboard
  to work (hard to file bug reports without a keyboard). The official
  kernel behaves identically, as does vanilla 3.17 from the mainline
  folder of kernel-ppa.

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