I just upgraded to Natty and after the upgrade on the laptop suspend is no longer working as before.
Before 11.04 I closed the lid, the laptop powered down. When I opened the lid and pressed the power button for a short time it would power up again and I could log in and continue working.
Now there are 2 problems:
a) no power down on lid closed (I am using the 'suspend' from the menu - no idea what this is called in unity -> upper right corner in the panel). Update: it does power down I found out it just takes a very long time to trigger (30 seconds or longer)
b) much worse: no power up after suspend. I need to turn off the laptop completely and reboot. I checked and all tools that I know of are installed: acpi-support, laptop-mode-tools, pm-tools
I have no idea how this could be fixed.
The laptop is a Samsung X360 if that helps any. I am not using any proprietary graphics drivers. (I think the graphics card is intel based)
Update: I found the following line in several logfiles in
May 8 09:34:40 MyLaptop kernel: [ 1.095713] i2c-core: driver [adp5520] using legacy suspend method
Update 2: this is how suspend looked in /var/log/messages before natty:
[11905.244790] PM: late suspend of devices complete after 32.636 msecs [12832.968226] Suspending console(s) (use no_console_suspend to debug) [12833.232083] PM: suspend of drv:HDA Intel dev:0000:00:1b.0 complete after 119.668 msecs [12833.268081] PM: suspend of drv:sky2 dev:0000:06:00.0 complete after 159.422 msecs [12833.268122] PM: suspend of drv:pcieport dev:0000:00:1c.3 complete after 155.763 msecs [12833.340925] PM: suspend of drv:sd dev:0:0:0:0 complete after 355.982 msecs [12833.340964] PM: suspend of drv:scsi dev:target0:0:0 complete after 355.898 msecs [12833.340986] PM: suspend of drv:scsi dev:host0 complete after 355.666 msecs [12833.420083] PM: suspend of drv:ahci dev:0000:00:1f.2 complete after 308.204 msecs [12833.420116] PM: suspend of drv: dev:pci0000:00 complete after 307.034 msecs [12833.420146] PM: suspend of devices complete after 451.541 msecs [12833.420150] PM: suspend devices took 0.452 seconds [12833.452789] PM: late suspend of devices complete after 32.627 msecs
Current kernel running (output from uname -A)