Hello,

i installed Debian testing from the netinst iso onto a Lenovo W530 laptop.
When booting the machine when it is attached to its docking station with
closed display, i very often get the kernel message

ASPM: Could not configure common clock

and then the boot process hangs.
When i reboot with the opened display but still connected to the docking
station, it boots successfully more often. And i never experienced this
message and a hung boot process when the laptop is not attached to the
docking station.

kernel: Linux laptop 4.5.0-2-amd64 #1 SMP Debian 4.5.4-1 (2016-05-16)
x86_64 GNU/Linux

I also tried the stable dist which has a 3.16 kernel (iirc), but then the
boot process hung after the following message:

thinkpad_acpi: unsupported brighten interface, please contaxt
ibm-acpi-de...@sf.net

I think it is not the common clock which is the problem, but how can i find
out what is really the problem?

Thanks in advance
Joysn

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