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Thread: Diagnosing & fixing unacceptably slow I/O performance

  1. #21
    Join Date
    Dec 2007
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    677

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    Hm - rebooted, no ext4 dmesg errors yet, however there are dependency issues now. Wireless does work, but:


    Code:
    $ sudo apt-get upgrade
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    You might want to run 'apt-get -f install' to correct these.
    The following packages have unmet dependencies:
     crda : Breaks: wireless-crda (< 1.15) but 1.14 is installed
    E: Unmet dependencies. Try using -f.
    $ sudo apt-get -f install
    Reading package lists... Done
    Building dependency tree       
    Reading state information... Done
    Correcting dependencies... Done
    The following package was automatically installed and is no longer required:
      bzr-dbus
    Use 'apt-get autoremove' to remove them.
    The following extra packages will be installed:
      wireless-crda
    The following packages will be upgraded:
      wireless-crda
    1 upgraded, 0 newly installed, 0 to remove and 22 not upgraded.
    1 not fully installed or removed.
    Need to get 2,658 B of archives.
    After this operation, 91.1 kB disk space will be freed.
    Do you want to continue [Y/n]? y
    Get:1 http://mirror.aarnet.edu.au/pub/ubuntu/archive/ precise/main wireless-crda i386 1.16 [2,658 B]
    Fetched 2,658 B in 0s (22.7 kB/s)        
    dpkg: dependency problems prevent configuration of wireless-crda:
     crda (1.1.2-1ubuntu1) breaks wireless-crda (<< 1.15) and is installed.
      Version of wireless-crda to be configured is 1.14.
    dpkg: error processing wireless-crda (--configure):
     dependency problems - leaving unconfigured
    No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                              Errors were encountered while processing:
     wireless-crda
    E: Sub-process /usr/bin/dpkg returned an error code (1)

  2. #22
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    Dec 2007
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    That script didn't help and it made quite a mess that was difficult to solve, to put it politely. I've worked it out with some surgical use of dpkg --force-depends --purge - back to where I've started now. Maybe I'll try a realtime kernel, that should have less of an effect on the system due to IO waiting.

  3. #23
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    Aug 2007
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    Usually wireless-crda does not install when crda is already installed. in newer systems this is just a meta package and can be safely removed. I just dl an older version that is NOT a meta package as it is a depend. I dont get why this should be so problematic.

  4. #24
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    Dec 2007
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    Hm, well - http://pastebin.com/iWeXvDu0, http://pastebin.com/J77uyYpf - it wasn't working out. I don't understand the system well enough to know why.

  5. #25
    Join Date
    May 2011
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    Could you run lspci and post the output?

  6. #26
    Join Date
    Dec 2007
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    677

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    Yeah, certainly - here it is:

    Code:
    00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 12)
    00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 12)
    00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
    00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
    00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
    00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05)
    00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 05)
    00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
    00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5)
    00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05)
    00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 05)
    00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05)
    00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 05)
    02:00.0 Ethernet controller: Broadcom Corporation NetLink BCM57780 Gigabit Ethernet PCIe (rev 01)
    04:00.0 Network controller: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01)
    ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02)
    ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02)
    ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
    ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 02)
    ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
    ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)

  7. #27
    Join Date
    May 2011
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    I thought it might have been a faulty SATA-600 port which is a bug in early Intel 6 Series chipsets, but you have a 5 Series chipset.

  8. #28
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    Aug 2007
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    @Vadi

    did apt-get install -f not fix the issue?

  9. #29
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    Dec 2007
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    Ah. Pity it's not a hardware issue, could have gotten that fixed by the manufacturer.

    The apt-get install -f wasn't fixing it - it was happy but then it'd spit some errors out. I've got it worked in the end with dpkg force remove, ignoring dependencies I uninstalled the wireless and kernel, and installed wireless back - that's OK now.

  10. #30
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    Aug 2007
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    The kernel would work you can modifiy the script not to dl wireless-crda. It is a very short script. In debian wheezy is crda preinstalled, as the dpkg -i used in the script is without override you usually only get a warning but not more, the u kernels however only install on 32 bit systems correctly because of too new libc6 for the 64 bit kernels. maybe your system had wireless-cdra as meta package installed not just cdra, could be a possible cause for the error.
    Last edited by Kano; 07-15-2012 at 06:03 AM.

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