Comment 52 for bug 532374

On Thu, Apr 1, 2010 at 2:33 PM, Colin King <email address hidden> wrote:

> @Daron, just because it works on Windows does not mean the BIOS is not
> 100% functionally correct w.r.t. the ACPI spec...
>

Of course.

I simply meant to suggest, "if Win7 can cope, can Ubuntu be made to as well
?"

There have been cases of (linux) workarounds for "not fully compliant" BIOS
in the past. I was just hoping this might be such a case. I don't know
enough about ACPI systems to be much of a judge in the matter...

Good luck with the Lenovo engineers. Hopefully we will see a speedy
resolution to this.

>
> --
> Lenovo Thinkpads with Core i5 and i7 suspend/resume (with kernel oops) once
> then fail horribly on next suspend
> https://bugs.launchpad.net/bugs/532374
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in The Linux Kernel: Unknown
> Status in OEM Priority Project: New
> Status in “linux” package in Ubuntu: Confirmed
> Status in “linux” source package in Lucid: Confirmed
>
> Bug description:
> This happens identically with both Thinkpad T410 and T510 models (intel
> integrated graphics, nvidia discrete graphics). The first suspend/resume
> completes successfully. The second suspend appears to work, but when
> waking, a few LEDs flicker, but the laptop stays suspended (moon LED on the
> lid stays lit, LED around power button continues to pulse). Pressing the
> power button again causes a reboot (no other buttons seem to do anything in
> this state).
>
> Per https://wiki.ubuntu.com/DebuggingKernelSuspend:
>
> $ grep -A4 Magic .tmp/dmesg.txt
> [ 1.148585] Magic number: 0:523:347
> [ 1.148587] hash matches
> /build/buildd/linux-2.6.32/drivers/base/power/main.c:471
> [ 1.148615] pci0000:00: hash matches
>
> That's the DRAM Controller.
>
> Same results from the "xterm" session, and also without X, so no
> gnome-power-manager interactions.
>
>
>
> To unsubscribe from this bug, go to:
> https://bugs.launchpad.net/linux/+bug/532374/+subscribe
>