Bug#923434: regression in kernel 4.9.144-3 on VIA C7
Package: linux-image-4.9.0-8-686-pae
Version: 4.9.144-3
Severity: normal
We have a VIA CN700-8237R board (with a Centaur C7 CPU). The kernel says
DMI: /CN700-8237R, BIOS 6.00 PG 11/25/2009
This used to boot successfully with 4.9.130-2, but consistently fails with
4.9.144-3. It also boots successfully with 4.19.16-1~bpo9+1, so I have a
workaround (at least for the time being).
With 4.9.144-3, the boot usually hangs after printing the message
console [tty0] enabled
Sometimes I see one more line on the console:
tsc: Fast TSC calibration using PIT
There seems to be a difference in behaviour between cold and warm boots, with
cold boots proceeding further (but still hanging eventually). Also, booting
in single user mode sometimes succeeds. This makes me think that the hardware
is not being (re)initialised correctly. I only have this one VIA C7 board,
so I cannot rule out a hardware defect.
I'm reporting this bug just in case someone has a use for the information,
but since (a) 4.19.16-1~bpo9+1 works, and (b) it's time for us to replace
this hardware anyway, I don't particularly need a fix.
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