I had positive feedback on the patch I have provided in the PPA: Ubuntu-3.13.0-53.89 + patch:
commit 682de5f4135f3414ec87bb76ef400de1148393c8 Author: Dan Williams <email address hidden> Date: Fri May 8 15:23:55 2015 -0400 ahci: avoton port-disable reset-quirk Avoton AHCI occasionally sees drive probe timeouts at driver load time. When this happens SCR_STATUS indicates device detected, but no D2H FIS reception. Reset the internal link state machines by bouncing port-enable in the PCS register when this occurs. Cc: <email address hidden> Signed-off-by: Dan Williams <email address hidden> Signed-off-by: Tejun Heo <email address hidden> -- 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/1458617 Title: Avoton server occasionally fails to boot when using SSD disks connected using ahci driver Status in linux package in Ubuntu: In Progress Bug description: It was brought to my attention the following BUG: Avoton server occasionally fails to boot when using SSD disks connected using ahci driver. When this problem occurs, the disk is not recognized by the Linux kernel, and the server fails to boot. * Upstream acceptance information: Intel's patch has already been accepted upstream commit dbfe8ef5599a5370abc441fcdbb382b656563eb4 Author: Dan Williams <dan.j.willi...@intel.com> Date: Fri May 8 15:23:55 2015 -0400 ahci: avoton port-disable reset-quirk Refer to http://permalink.gmane.org/gmane.linux.kernel.commits.head/524068 * How reproducible: About once per 5000 reboots on one server. However, if the customer has several hundred servers, the frequency isn't negligible. * Steps to Reproduce: Reboot server. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1458617/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp