So I recently installed Ubuntu 13.04 64 bit on a Thinkpad T400, and wow, this thing flies! The only real issue I've had so far is that the suspend feature is a bit unreliable. Initially, every time I closed the lid, when I opened it and the machine came out of suspend, I was at the main logon screen, and of course I had been logged out, lost my open programs, etc.
First, I tried upgrading my kernel, as suggested by this thread:
When that didn't work, I figured I'd stick with the original kernel for 13.04, so I went back to 3.8.0-23-generic.
Then, at the suggestion of this article:
I added this to my grub file:
As a result, now it sometimes works perfectly, sometimes it hangs for a while at a black screen before resuming, but usually the screen goes completely blank, and stays that way. I can hear the hard drive working, and the network light is on, and overall the system seems perfectly up and running, except for the screen.Code:GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" GRUB_CMDLINE_LINUX="acpi_osi=Linux"
Here's the really odd thing: So far every time I have runthe system resumes just fine. That being said, what I think might work is to make pm-suspend run as soon as the lid is closed. My question is, how in the world do I do that? Failing that, does anyone have any thoughts on what might be causing this? So far Dual booting fresh installs of Ubuntu 13.04 and Windows 7, I've had far less driver issues in Ubuntu than in windows, and I'd love to have Ubuntu working perfectly, if only to rub it in my Microsoft fanboy friend's face!Code:sudo pm-suspend