Page 4 of 4 FirstFirst ... 234
Results 31 to 33 of 33

Thread: Very slow SDD/HDD performance

  1. #31
    Join Date
    Jan 2006
    Location
    Örebro, Sweden
    Beans
    491

    Re: Very slow SDD/HDD performance

    Yes. Strange, isn't it?

    Anyway, here are my conclusions.
    • With "noapic", I get lag both after suspend/resume, and after (un)plugging the AC adapter
    • With "nolapic", I can suspend, but still get lag when (un)plugging the AC
    • With "nolapic" I only see 1 of 4 CPU cores
    • With "noapic nolapic", I have the same behaviour as with only "nolapic"


    I think I will take it to Launchpad from here.

    Thanks a lot for your discussion, dabl.

  2. #32
    Join Date
    Jan 2006
    Location
    Örebro, Sweden
    Beans
    491

    Re: Very slow SDD/HDD performance

    I started to think this was related to bumblebee (or bbswitch), but maybe not.

    I have a new, clean, Kubuntu 12.10 installation on a separate partition on the HDD. Everything is on the same partition on that installation. The only modification is that I have disabled the swap partition, not to overwrite the hibernate file of my other Kubuntu installation. On that installation, things work as they should.

    From my main installation, I purged everything related to nvidia and bumblebee, and cleaned the boot command line to have no extra options. But the problem remains: I get lots of lag after I unplug the AC or do suspend.

    So I don't know which package I could file a bug report to on Launchpad either.

    I should try to check what other differences there are between my problematic Kubuntu installation and the clean, working, one.

  3. #33
    Join Date
    Jan 2006
    Location
    Örebro, Sweden
    Beans
    491

    Re: Very slow SDD/HDD performance

    I have now upgraded to Kubuntu 13.04 (first an upgrade, but now a clean install), and I still see the same problem. After a bit of more troubleshooting, I see that I get the slowness problem also on the HDD installation.

    However, a workaround seems to be to hibernate and resume. After resuming from hibernate, things are as fast as from a reboot, until I unplug the AC cord or suspend again.

    This workaround is a bit cumbersome, but it works for me.

Page 4 of 4 FirstFirst ... 234

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •