This is a regression from 3.8.0-18, and is present in both 3.8.0-19 and 3.8.0-20.
Resuming from supsend no longer works on the System76 Sable Complete all in one. When you wake up the system (either with the power button or keyboard), the hardware status will change (power light goes from blinking to solid), but the system does not resume. The backlight stays off, and I'm unable to SSH into the system. By watching our DHCP server logs, I can also confirm that the system never makes a DHCP request. So the issue is something more that just the backlight not being turned on.
Interestingly, if you happen to have a 2nd monitor connected (over HDMI), the system resumes from suspend perfectly. But if you then disconnect the 2nd monitor and try again, it wont resume.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-20-generic 3.8.0-20.31
ProcVersionSignature: Ubuntu 3.8.0-20.31-generic 3.8.11
Uname: Linux 3.8.0-20-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: oem 1708 F.... pulseaudio
/dev/snd/controlC1: oem 1708 F.... pulseaudio
CurrentDmesg: [ 14.233047] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
Date: Wed May 8 10:19:04 2013
HibernationDevice: RESUME=UUID=c6bf9bbb-b4e0-4157-866b-5cdaf9972f0a
MachineType: System76, Inc. Sable Complete
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-20-generic root=UUID=0eb0cba2-7b1c-4988-8b67-6d49d0fec820 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.8.0-20-generic N/A
linux-backports-modules-3.8.0-20-generic N/A
linux-firmware 1.106
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/26/2012
dmi.bios.vendor: Intel Corp.
dmi.bios.version: AGH6120H.86A.0015.2012.0926.1822
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: DH61AGL
dmi.board.vendor: Intel Corporation
dmi.board.version: G71256-200
dmi.chassis.type: 3
dmi.chassis.vendor: System76, Inc.
dmi.chassis.version: sabc1
dmi.modalias: dmi:bvnIntelCorp.:bvrAGH6120H.86A.0015.2012.0926.1822:bd09/26/2012:svnSystem76,Inc.:pnSableComplete:pvrsabc1:rvnIntelCorporation:rnDH61AGL:rvrG71256-200:cvnSystem76,Inc.:ct3:cvrsabc1:
dmi.product.name: Sable Complete
dmi.product.version: sabc1
dmi.sys.vendor: System76, Inc.
A bit more digging... this is more than just the backlight not being turned on. I installed openssh-server to see if I could SSH into the system when the screen was black (after attempting to wake up)... no such luck.
And by watching our DHCP server logs, I've confirmed that this system never makes a DHCP request. The the resume process is hanging early on.