Which Lenovo Laptop?

[文鳥]

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