Thinkpad T30 LCD does not turn off during suspend to ram

[AnthonyBoynes]

My Thinkpad T30 laptop is configured as dual boot system with Debian Etch and the Hardy Heron final release.

After booting into Hardy Heron, when doing suspend to ram from either the gnome power manager, or using the Thinkpad function keys, the lcd display does not turn off. It goes blank for a moment, and then starts to turn greenish; the discoloration starts at the bottom the display and gradually up from the middle of the display. If I close the lid, the display still remains on. The laptop will still resume from suspend.

I have tried setting "RADEON_LIGHT=true" in /etc/default/acpi-support, but this does not alleviate the problem.

Debian Etch, which was installed first on the laptop, does not exhibit this behavior at all. The display turns off when I suspend to ram from kpowersave, or using the function keys.

[AnthonyBoynes (aboynes-gmail)]

Tonight I decided to put Gutsy Gibbon 7.10 on the same Thinkpad T30. I installed it over the Hardy Heron partition, letting it format and install fresh. Gutsy Gibbon suspends to ram normally and DOES turn off the display, as should be the case. Suspend to disk also works normally with Gutsy Gibbon the T30.

[Jonathan Jogenfors (etnoy)]

Author says it's fixed now, closing

[Steve Langasek (vorlon)]

No, the submitter said that the bug is fixed in a *previous* release of Ubuntu. Reopening.

[Thomas Hotz (thotz-deactivatedaccount)]

Can you reproduce this bug with a supported Ubuntu version? Thank you!

[AnthonyBoynes (aboynes-gmail)]

Hello,

I no longer use that laptop nor Ubuntu. I don't foresee doing either
any time in the near future.

Anthony

On Mon, Oct 29, 2012 at 12:59 AM, Thomas Hotz <email address hidden> wrote:
> Can you reproduce this bug with a supported Ubuntu version? Thank you!
>
> ** Changed in: acpi-support (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/221645
>
> Title:
> Thinkpad T30 LCD does not turn off during suspend to ram
>
> Status in “acpi-support” package in Ubuntu:
> Incomplete
>
> Bug description:
> My Thinkpad T30 laptop is configured as dual boot system with Debian
> Etch and the Hardy Heron final release.
>
> After booting into Hardy Heron, when doing suspend to ram from either
> the gnome power manager, or using the Thinkpad function keys, the lcd
> display does not turn off. It goes blank for a moment, and then
> starts to turn greenish; the discoloration starts at the bottom the
> display and gradually up from the middle of the display. If I close
> the lid, the display still remains on. The laptop will still resume
> from suspend.
>
> I have tried setting "RADEON_LIGHT=true" in /etc/default/acpi-support,
> but this does not alleviate the problem.
>
> Debian Etch, which was installed first on the laptop, does not exhibit
> this behavior at all. The display turns off when I suspend to ram
> from kpowersave, or using the function keys.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/acpi-support/+bug/221645/+subscriptions