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    SubjectRe: cpufreq longhaul locks up
    > Hi Rafał,
    Hi
    >> >
    >> > I found that setting the cpufreq governor to ondemand making the box
    >> > lock up solid in 2.6.20.2 and 2.6.21 after a few seconds.
    >> > [...]
    >>
    >> I can't explain this. Some motherboards are running fine, some don't.
    >> I'm running longhaul too. It is working fine. No lockups at all.
    >> So far I heard only about one Epia which had problems with longhaul.
    >> It was almost like my Epia but older.
    >> What is possible:
    >> - some chipsets revisions are broken and aren't blocking DMA,
    >> - special setup is required, some versions of BIOS are doing
    >> necessary things, some don't,
    >
    > Which BIOS are you using?
    Latest beta BIOS which was supposed to fix Linux "DMA timeout" bug.
    I don't remember exact version, It wasn't fixing this bug.
    > [...]
    >> Btw. I've been writting many times: if You want to use ondemand with
    >> Longhaul You don't need cpufreq at all. It is just one another cool
    >> gadget for You. Longhaul wasn't designed to change frequency often.
    >> It has big latency and requires so much preparation that it isn't worth
    >> if You don't need to save power or cool down CPU.
    >
    > What should I use instead of ondemand? I do want to save power and
    > have my machine run cooler (I have a htpc that is on 24/7, it's
    > running kind of hot and allready has blown a PSU)
    I'm using conservative. It is allowing me to turn off fan with
    bigger cooler borowed from AMD CPU.
    > Does the userspace governor have the same problems? (I'd guess so)
    For testing I was using userspace governor. 1s interval, Min to max.
    1s interval. Max to min.
    I don't like userspace programs. Most of them is doing exactly the
    same thing which ondemand does.
    > I'd like to take this opportunity to thank you for the work you have
    > already done on cpufreq!
    > So: thanks Rafał! I appreciate it!
    Thanks, but it isn't working. It isn't good job. It isn't nothing more
    then luck.
    > [...]
    > I am using the onboard mpeg2 hardware decoder with the Openchrome drivers
    Me too. Works great. As usual not thanks to VIA, but good developers
    diging in binary drivers.
    > I hope this helps someone
    > Wander.
    Regards
    Rafał


    ----------------------------------------------------------------------- Linda jako gospodyni domowa - zobacz!!!
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