Comment 47 for bug 280646

Revision history for this message
Marc Jauvin (marc-r4l) wrote : Re: [Bug 280646] Re: ACPI brightness events no longer work on ThinkPad T61

Hi Matt, since I did this upgrade, keyboard and mouse don't work after
I rebooted... not sure if this is caused by your updated package (or
one of their dependency like xinput).

I'm currently writing this from Hardy since my Intrepid install is
unusable... ;)

Matt Zimmerman <email address hidden> wrote:

> There is a package in my PPA with this patch:
>
> https://edge.launchpad.net/~mdz/+archive
>
> deb http://ppa.launchpad.net/mdz/ubuntu intrepid main
> deb-src http://ppa.launchpad.net/mdz/ubuntu intrepid main
>
> I haven't been able to test it on the T61 yet, but would appreciate
> regression testing nonetheless.
>
> --
> ACPI brightness events no longer work on ThinkPad T61
> https://bugs.launchpad.net/bugs/280646
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “gnome-power-manager” source package in Ubuntu: Triaged
> Status in “linux” source package in Ubuntu: Triaged
>
> Bug description:
> Binary package hint: gnome-power-manager
>
> Problem:
> The state of the numlock key affects how the brightness switching
> keys work. The OCD display does not display. On some systems (e.g.
> Thinkpad 61's), it also prevents brightness from changing. This
> seems to be a new behavior in Intrepid, and not reproducible on Hardy
>
> A further issue on Thinkpad T61's is that the numlock key does not
> signal toggle off properly. This can be seen in xkbwatch, which
> shows that some modifiers are not getting turned off when numlock is
> toggled off.
>
> Original Report:
> [regression from 8.04]
>
> I'm not sure about the root cause of this yet, but starting here.
>
> Pressing the brightness up/down keys on my ThinkPad T61 no longer
> changes the brightness of the LCD backlight. This worked fine in
> 8.04, and at some point in Intrepid as well.
>
> When I press the brightness-up key, I see two ACPI events:
> video LCD0 00000086 00000000
> ibm/hotkey HKEY 00000080 0000501
>
> brightness-down is similar:
> video LCD0 00000087 00000000
> ibm/hotkey HKEY 00000080 0000501
>
> In xev, I see KeyPress and KeyRelease events forXF86MonBrightnessUp
> and XF86MonBrightnessDown, respectively.
>
> However, the backlight is not actually changed, and
> gnome-power-manager does not display the brightness level OSD (both
> of which worked in 8.04)
>
> WORKAROUND: gconftool-2 --set --type bool
> /desktop/gnome/peripherals/keyboard/host-perseus/0/numlock_on false
>
> ProblemType: Bug
> Architecture: amd64
> DistroRelease: Ubuntu 8.10
> Package: linux-image-2.6.27-5-generic 2.6.27-5.8 [modified:
> lib/modules/2.6.27-5-generic/modules.pcimap
> lib/modules/2.6.27-5-generic/modules.dep
> lib/modules/2.6.27-5-generic/modules.ieee1394map
> lib/modules/2.6.27-5-generic/modules.usbmap
> lib/modules/2.6.27-5-generic/modules.isapnpmap
> lib/modules/2.6.27-5-generic/modules.inputmap
> lib/modules/2.6.27-5-generic/modules.seriomap
> lib/modules/2.6.27-5-generic/modules.alias
> lib/modules/2.6.27-5-generic/modules.symbols]
> ProcCmdLine: root=UUID=305dde78-d20a-4248-aaf4-09447b7c5791 ro quiet splash
> ProcEnviron:
> LC_COLLATE=C
>
> PATH=/home/username/bin:/usr/lib/ccache:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/sbin:/usr/sbin:/usr/games:/usr/lib/surfraw
> LANG=en_US.UTF-8
> SHELL=/bin/zsh
> ProcVersionSignature: Ubuntu 2.6.27-5.8-generic
> SourcePackage: linux
>

--
Marc Jauvin
514-905-6500
http://register4less.com