Which Lenovo Laptop?

Pierre-Luc Drouin pldrouin at pldrouin.net
Fri Dec 9 14:18:18 UTC 2011

On Fri, Dec 9, 2011 at 2:03 AM, 文鳥 <bunchou at googlemail.com> wrote:
> Hi,
> I am typing this message on a W520 running 9.0 stable, which should be
> similar enough to the T520.
> - MBR boot works fine, but GPT seems to be impossible (Lenovo
>  appears to have messed up again).
> - The NVidia driver is working almost perfectly once you enforce it in
>  BIOS, but occasionally (3 times in last 2.5 months) the screen starts
>  displaying a strange block pattern after some time and renders the
>  display unusable until I restart X (logging in via SSH works, as does
>  the power button == ACPI shutdown). Haven't been able track the cause
>  down yet.
> - Suspend seems to be unreliable, so I stopped trying (back on BETA2).
> - acpi_ibm.ko works once you patch sys/dev/acpi_support/acpi_ibm.c,
>  line 338, and replace "IBM0068" with "LEN0068", which makes most of
>  the multimedia keys usable.
> - Wireless is working (iwn), but I'm not using it that frequently so
>  YMMV.
> - I cannot comment on bluetooth, camera or SD card reader, since I
>  never use those.
> But there is one annoying problem I did not manage to fix yet: The
> screen brightness control does not work at all, i.e. it's always at
> maximum (hw.acpi.video sysctls seem to have no effect). All in all, this
> laptop is a nice desktop replacement, just don't expect the battery to
> last too long.
> Best regards

When you say that suspending seems unreliable, do you mean that it
sometimes work? Did you try unloading kernel modules before putting it
in sleep mode to see if it makes a difference?
About screen brightness, I thought there was a setting in xorg.conf
that made it to work?


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