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    Re: high idle CPU freq for Haswell Refresh CPUs

    Thanks for your help, Doug. Hopefully, someone will reply to that bugzilla.. so far you are the only one and I basically found you here in these forums!
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    Re: high idle CPU freq for Haswell Refresh CPUs

    OK. I have a 2.4 MB perf.dat file resulting from that command and 10 min of idle. How shall I process it?
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    Re: high idle CPU freq for Haswell Refresh CPUs

    I think the forum added some unholy white spaces to your patch; I manually rebuilt it here: https://gist.github.com/graysky2/017cc9bd72eb75b374c7

    ...it applied cleanly to 3.19.

    Once I boot into...
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    Re: high idle CPU freq for Haswell Refresh CPUs

    Saved your patch as "pstate.patch" and tried applying it to 3.19 from the tarball on kernel.org but it does not apply for me...

    % patch -Np1 -i ../pstate.patch patching file...
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    Re: high idle CPU freq for Haswell Refresh CPUs

    No, 300 Hz per the Arch default causes the high freq on idle under Xorg. Either 1000 Hz or 250 Hz work as expected. Note that Ubuntu uses 250 and Fedora uses 1000. No other changes were needed to...
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    Re: high idle CPU freq for Haswell Refresh CPUs

    OK! How crazy is this: Settings of both 250 Hz or 1000 Hz both give idle rates that are comparable to either Ubuntu or Fedora. A setting of 300 Hz is to blame for the odd behavior I originally...
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    Re: high idle CPU freq for Haswell Refresh CPUs

    OK.. using the stock Arch kernel (no mods at all) and changing /sys/kernel/debug/pstate_snb/p_gain_pct from 20 to 13, I can also get the idle freq to the same range as either of the two mods...
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    Re: high idle CPU freq for Haswell Refresh CPUs

    Thanks. Through trial and error, I have determined that the only change I need to make in order to restore the expected lower freq idle on Arch and my CPU is to simply increase the tick rate from...
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    Re: high idle CPU freq for Haswell Refresh CPUs

    Hmmm.. pgain? Didn't find anything googling that. How does one adjust the pgain?
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    Re: high idle CPU freq for Haswell Refresh CPUs

    Eureka! The problem is not with xorg or with the video driver, it is with the Arch kernel itself. I used the fedora config and compiled under Arch for Arch version 3.18.7. Upon booting into it, I am...
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    Re: high idle CPU freq for Haswell Refresh CPUs

    @Doug - That is interesting... I wonder if I build the 3.18.7 kernel under Arch using the config from Ubuntu what the result will be... I will have to try this to see if possible. To answer your...
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    Re: high idle CPU freq for Haswell Refresh CPUs

    Yes, I have posted there as well, but was interesting is casting a wider net by posting here as well. Many smart folks use Ubuntu too :)
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    high idle CPU freq for Haswell Refresh CPUs

    Problem: My i7-4790k with onboard GPU on a fresh install of Arch idles at much higher CPU frequencies compared to the very same hardware booted into either Ubuntu 15.04 (vivid-desktop-amd64.iso...
  14. [all variants] Re: Profile-sync-daemon - keep browser profiles in tmpfs

    Version 5.60 has just been released which offers the ability to use overlayfs to improve sync/unsync operations as well as lower the memory footprint. Typical speed ups are modest based on this...
  15. [all variants] Re: Profile-sync-daemon - keep browser profiles in tmpfs

    Sorry about your bad experience. For some reason I stopped getting notification that this thread was updated, so didn't see your replies until months later. All I can tell you is that psd is pretty...
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    [ubuntu] Re: Status of Realtek 8111E support?

    Ended up purchasing an MSI H97I AC with this chipset and it works great.
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    [ubuntu] Status of Realtek 8111E support?

    I am considering a motherboard (H97) that has an onboard LAN using the Realtek 8111E chipset. What is the status of kernel support for this hardware? Any reasons why I should avoid it? Thanks!
  18. [all variants] Re: Profile-sync-daemon - keep browser profiles in tmpfs

    Hmm... I need more info. Post the output of:

    psd p

    Also of:

    cat ~/.mozilla/firefox/profiles.ini
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