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Bug#721310: installation-report: Wheezy + Testing setup on FSC Futro S450 w/ dualcore-CPU

reassign 721310 src:linux
severity 721310 wishlist 
retitle 721310 please enable ACPI_INITRD_TABLE_OVERRIDE
# <waldi> | h01ger: no. this is a firmware bug, which may be possible to
# workaround with acpi table overrides
# <h01ger> | waldi: so which package is providing that firmware? firmware-
# linux? 
#<   jcristau> | h01ger: the hardware

Hi Andreas,

thanks for your installation-report, much appreciated!

On Freitag, 30. August 2013, Andreas Glaeser wrote:
> [...] When the original CPU was replaced by an AMD Turion 64
> TL-50, I found that this is not running in a stable manner and used up
> more energy than reasonable, because there were complaints at boot-time
> about missing ACPI-tables in the BIOS for Powernow-K8 frequency-scaling.
> So I built a kernel version with frequency-scaling disabled, that runs OK,
> so far, now in the second version already on an even newer Turion 64 TL-58
> CPU. The upside of this is that the wattage is still very low, at a
> maximum of about 23 W. The downside is that the CPU runs at its minimum
> frequency, which results in unattractive latencies and low performance.
> When I configure the new 3.10 kernel-sources, I saw that there is an
> option to inject ACPI-tables from the initrd into the kernel instead of
> fetching them from the BIOS. So this is probably the way to unlock the
> CPU-potential with this thin-client hardware. The wattage will be about 10
> W higher then, the CPU-speed should double at least and extra active
> cooling will be necessary. At this time I did not check yet, where to get
> those ACPI-tables from. I guess one could try to read them out of socket
> S1 notebook BIOSes, or get them directly from the technical specification
> from AMD. There was no further research about this yet. The following data
> show the system with the TL-50 CPU, that was present at installation-time.
> Current dmesg-output with newer kernel- and CPU-version is also attached.


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