linux-kernel - TSC problems with Acer TravelMate 5735Z

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Message-ID: <a8c0c572-6dba-8d35-69bd-5e7b19bf6aba@molgen.mpg.de>
Date:   Sun, 24 May 2020 19:09:18 +0200
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     x86@...nel.org
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: TSC problems with Acer TravelMate 5735Z

Dear Linux folks,

I got my hands on an old Acer TravelMate 5735Z (Intel GM45/Cantiga) and 
installed Debian Sid/unstable with Linux 5.6.7 on it.

Booting the system it takes a long time, and the systemd units fail to 
start. The logs contain that the TSC is unstable. Adding `tsc=unstable` 
to the Linux kernel command line fixes this.

Do you have an idea, what might cause this? Do you have an idea, what 
might cause this, and how it can be fixed?

Kind regards,

Paul

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