The bisect reported the following as the first bad commit:
commit 1302fcf0d03e6ea74846c7fee14736306ab2ce4b
Author: Bjorn Helgaas <[email protected]>
Date: Sat Aug 30 07:23:01 2014 -0600
PCI: Configure *all* devices, not just hot-added ones
I built a Xenial test kernel with a revert of this commit.
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1571798/revert
Can you test that kernel and report back if it has the bug or not?
Note, with this kernel, you have to install both the linux-image and
linux-image-extra .deb packages.
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https://bugs.launchpad.net/bugs/1571798
Title:
Broadwell ECRC Support missing in Ubuntu
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Vivid:
In Progress
Status in linux source package in Wily:
In Progress
Status in linux source package in Xenial:
In Progress
Status in linux source package in Yakkety:
In Progress
Bug description:
Here is the problem statement from the Dell team:
When booting into Ubuntu 14.04.4 with a Broadwell CPU and an Intel
Quick Assist Card, the memory location that corresponds to ECRC is set
to 0x01e0, when the BIOS is setting this location 0x00a0 pre-OS boot.
This causes the card to not function unless we implement the following
workaround using setpci.
“setpci –s AA:BB.C 160.w=0”, where AA:BB.C is the PCI Root Path for
the Intel Quick Assit Card.
We’ve verified the memory location is correct when booting to other
OSes, such as RHEL 7.2 and Windows Server 2012 R2.
If there is any information you can give as to why this may be
occurring in Ubuntu or where we may start to debug when the memory is
changed, we would appreciate it.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1571798/+subscriptions
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