Problems with VIA VB8001 (and probably other VIA Nano boards/laptops)

Michael Moll kvedulv at
Mon May 11 14:07:32 UTC 2009

Hello All,

some days ago I migrated my home-server from a VIA PC2500E (with C7 CPU)
to a VIA VB8001 (with VIA Nano). Overall it went quite good, I see only
two remaining problems.

- 1. SATA Controller

With the patch found here:
the controller is detected correctly and negotiates SATA300 with the

It would be nice to have this (or a similar patch) commited.

- 2. Power Management

The est driver fails to attach to the CPU. This is somewhat OK, as the
necessary table in est.c for this specific CPU is missing at the moment.

When powerd is started, it usually takes about 3-5 seconds and the
system panics. I guess, powerd tries to throttle the CPU down via ACPI
oder P4TCC, as there are some levels recognized:
dev.cpu.0.freq_levels: 1615/-1 1413/-1 1211/-1 1009/-1 807/-1 605/-1 403/-1 201/-1
dev.p4tcc.0.freq_settings: 10000/-1 8750/-1 7500/-1 6250/-1 5000/-1 3750/-1 2500/-1 1250/-1

The kernel configuration file, crashinfo output and verbose dmesg can be
found at if someone wants to look into

Best Regards
Michael Moll

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