Here's the skinny: I have installed Ubuntu 14.04.1 onto a brand new ADATA SSD; the /home directory is on a different drive.
Basic specs: 8 core AMD; 16GB; GForce 450 GTS with proprietary driver.
Here's my complete dmesg: http://paste.ubuntu.com/8185314/
Points of interest:
- Line 713 to 1320 is a whole bunch of this line: [ 1.396226] AMD-Vi: Event logged [IO_PAGE_FAULT device=02:00.0 domain=0x0016 address=0x00000000ce9f9880 flags=0x0010]
-- It only adds about 1 second to the boot time, so I am not overly concerned at this time; however, when a line is repeated that many times, I can't help but think there's something amiss.- Line 1332 is this line: [ 19.020058] xhci_hcd 0000:02:00.0: can't setup: -110
-- This adds 17 seconds to the boot time. I have tried turning XHCI off and on in the BIOS with no effect. Knocking 15+ seconds off the boot time is quite significant!- Line 1583 is this line: [ 58.924735] audit_printk_skb: 132 callbacks suppressed
-- This adds 27 seconds to the boot time. So far, Google searching has led me nowhere. 27 seconds is a very big deal.- I'm not sure where the last line (1587) came from; I'm fairly certain I can resolve that one.
As always, any and all suggestions are greatly appreciated. My son's Arch install can boot up in something ridiculous like 7 seconds ... I can't let him get away with that!!
Cheers!
UPDATE: SOLVED!! All three points above are solved by enabling software IOMMU and disabling BIOS IOMMU. Please review the solution:
1. In a terminal, run the following command: gksudo gedit /etc/default/grub
2. Edit the empty quotes in this line to read: GRUB_CMDLINE_LINUX="iommu=soft"
3. Save changes, and close the file.
4. Update GRUB with the changes: sudo update-grub
5. Close the terminal, save all your work, and reboot your machine.
6. Enter your BIOS/UEFI (most machines want you to hit DEL before the POST) and Disable IOMMU
7. Save your changes, and restart. Check your dmesg to ensure all of the changes were effective.
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