HP EliteBook 9480m and others crash when sleeping docked and resuming undocked

Bug #1475129 reported by val-s
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
pm-utils (Ubuntu)
New
Undecided
Unassigned

Bug Description

I've seen this bug on multiple versions of Ubuntu (14.04 and 15.04) and with multiple hardware (HP EliteBook 9470m, HP EliteBook 9480m, and HP EliteBook 820). Not surprising since they appear to share a bios core. They are all running latest BIOS.

Sleep/resume normally works fine, but if I allow it to sleep while in the docking station, and then I undock it and resume it, it appears to try to resume, then after half a second or so, it flashes back to POST screen and boots fresh. It looks to me like the resume operation crashes somehow and it reboots.

Observations:

It does not matter if there are any monitors pluged into the docking station.
I've tried toggling deep-sleep in bios, no effect.
I've tried toggling USB3 in bios, no effect.

I can't find any indication of a crash or a reason for the reboot in any of the logs. I added the dmesg from EliteBook 820 because it's the simpler installation. I have Bluetooth, Camera, and audio turned off in bios for various reasons. It is also docked in a monitor-less dock (I use it for charging).

Please let me know what other information I can provide.

Revision history for this message
val-s (val-s) wrote :
Revision history for this message
val-s (val-s) wrote :

I had the wrong package selected. But I'm not sure if this is a pm-utils issue or a kernel issue.

affects: alsa-driver (Ubuntu) → pm-utils (Ubuntu)
Revision history for this message
val-s (val-s) wrote :

as a clarification, the 820 has the BT, audio, and camera turned off in the bios, but the 9480m does not. Those three items are not a variable in this issue.

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