can confirm the bug with almost identical setup: 32GB RAM
00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06) 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06) 00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04) 00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04) 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-LM (rev 04) 00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 04) 00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04) 00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Q87 Express LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04) 00:1f.6 Signal processing controller: Intel Corporation 8 Series Chipset Family Thermal Management Controller (rev 04) Reducing the amount of memory from 32 to 16GB helps immediately, didn't try (and won't at this point because 16GB is sufficient at the moment) mainline kernel as being short of time. 64 Bit kernel does NOT expose the problem! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1107150 Title: [Gigabyte P75-D3] I/O Problems Status in “linux” package in Ubuntu: Incomplete Bug description: I built a new system and installed Ubuntu 12.10. The system has the following specifications: Samsung 840 Pro 128 GB Gigabyte P75-D3 Intel i7 3770 32 GB Ram Western Digital 1 TB Black (mounted as /home) Western Digital 3 TB Green (mounted as /media/data_drive) The initial Ubuntu 12.10 install took almost 6 hours as transfer rates were very slow. After reboot everything appeared very fast. However when I did an "apt-get update" the download took 20 seconds and the processing of lists took 19 minutes. I had 12.10 installed on another computer which was working great (older Althon system) so I installed the drive and tested the new machine. It suffered the same performance problems. I installed Windows 7 and performed speeds tests, it reported great results. I installed 12.04 onto the 1 TB drive and it did not suffer the same performance problems. Everything ran great. I then upgraded 12.10 to 13.04 (January 27, 2013) and it too suffered from the performance issue. It appears that a change between 12.04 to 12.10 impacts AHCI based systems specifically running the Intel B75 chipset. I am not certain but I think that either the motherboard is misrepresenting something (that 12.04 ignores but it impacts 12.10) or the kernel is not detecting the system correctly. I created a couple of pastebins with data collected: 12.10 Install: http://pastebin.ubuntu.com/1561660/ 12.04 Live Disk (was checked against installed version and data is mostly the same): http://paste.ubuntu.com/1565140/ I have a thread on the ubuntu forums that may provide additional details: http://ubuntuforums.org/showthread.php?t=2104709 I also started an e-mail thread to the ubuntu-users mailing list: http://ubuntu.5.n6.nabble.com/Seeking-Help-td5010422.html I have done a lot of troubleshooting and I feel that the problem must either be the kernel or the bios misrepresenting information. In either case I am stuck without any idea of where to go next with the debuging and diagnoses path. If any additional information needs to be collected, please let me know and I will work to assist. --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu17.1 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: bakers 1729 F.... pulseaudio /dev/snd/controlC0: bakers 1729 F.... pulseaudio CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xf7110000 irq 45' Mixer name : 'Realtek ALC887-VD' Components : 'HDA:10ec0887,1458a002,00100302' Controls : 39 Simple ctrls : 20 Card1.Amixer.info: Card hw:1 'NVidia'/'HDA NVidia at 0xf7080000 irq 17' Mixer name : 'Nvidia GPU 42 HDMI/DP' Components : 'HDA:10de0042,14583553,00100100' Controls : 18 Simple ctrls : 3 DistroRelease: Ubuntu 12.04 IwConfig: lo no wireless extensions. eth0 no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M. MarkForUpload: True NonfreeKernelModules: nvidia Package: linux (not installed) ProcEnviron: LANGUAGE=en_CA:en TERM=xterm PATH=(custom, no user) LANG=en_CA.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-36-generic-pae root=UUID=4f30252c-fa56-4d53-be78-117cddab55f4 ro quiet splash ProcVersionSignature: Ubuntu 3.2.0-36.57-generic-pae 3.2.35 RelatedPackageVersions: linux-restricted-modules-3.2.0-36-generic-pae N/A linux-backports-modules-3.2.0-36-generic-pae N/A linux-firmware 1.79.1 RfKill: StagingDrivers: mei Tags: precise running-unity staging Uname: Linux 3.2.0-36-generic-pae i686 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 08/21/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: F9 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: P75-D3 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF9:bd08/21/2012:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnP75-D3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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