I just did a fresh install of the April 24 daily build with kernel
4.15.0-19 on my Dell R820 and I can confirm this has been fix. Thank
you!
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This bug was fixed in the package linux - 4.15.0-19.20
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linux (4.15.0-19.20) bionic; urgency=medium
* linux: 4.15.0-19.20 -proposed tracker (LP: #1766021)
* Kernel 4.15.0-15 breaks Dell PowerEdge 12th Gen servers (LP: #1765232)
- Revert "blk-mq: simplify queue mapping &
** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1765232
Title:
Kernel 4.15.0-15 breaks Dell PowerEdge
** Description changed:
+ SRU Justification
+
+ Impact: Since 4.15.0-15 some machines have been failing to boot due to
+ IO hangs. This is caused by patches applied for LP #1759723, which
+ assigned managed interrupt vectors and reply queues for all possible
+ CPUs, not just present CPUs. Some
Thanks for testing, I'll get those reverts sent to the list.
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Title:
Kernel 4.15.0-15 breaks Dell PowerEdge 12th Gen servers
The kernel from post #12 also works without issue for me too.
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Title:
Kernel 4.15.0-15 breaks Dell PowerEdge 12th Gen servers
Seth, thanks for the guidance, that did it. Looks like the kernel from
#12 works without issue. Glad you were able to identify the commits that
did it.
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Make sure you got linux-image-unsigned, linux-modules, *and* linux-
modules-extra. linux-modules-extra has the hpsa driver.
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https://bugs.launchpad.net/bugs/1765232
Title:
And now here's another test build with the upstream fixes. Note that the
last patch needed too much backporting to do in short order, and I had
to include one additional prerequisite:
http://people.canonical.com/~sforshee/lp1765232/linux-4.15.0-18.19+lp1765232v201804211053/
Please test the
Here's a test kernel with the reverts, please let us know ASAP whether
or not this fixes the issue.
http://people.canonical.com/~sforshee/lp1765232/linux-4.15.0-18.19+lp1765232v201804211006/
Thanks!
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I've been investigating, and I strongly suspect these commits for bug
1759723 are to blame.
f0aff9ccc834 genirq/affinity: assign vectors to all possible CPUs
9403a13fd07e blk-mq: simplify queue mapping & schedule with each possisble CPU
As far as I can tell there are 8 other fixes we'd need to
I'd suggest prioritizing testing of the v4.15.17 mainline kernel as this
is the latest update bionic has incorporated. If that is broken then try
v4.15.18 to see if there's a fix there, otherwise it points to some
Ubuntu-specific changes or backports.
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Can you also give the mainline kernel a try:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17-rc1/
If the mainline kernel does not have the bug, please test the latest upstream
4.15 kernel:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15.18/
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I just tried the proposed kernel (4.15.0-18.19) and it still has the
same problem.
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https://bugs.launchpad.net/bugs/1765232
Title:
Kernel 4.15.0-15 breaks Dell PowerEdge
If the bug still exists in proposed, we can perform a kernel bisect to
identify the commit that introduced this regression.
Also, if this bug still exists in proposed, it might be good to see if
this bug also exists in the latest mainline kernel, which can be
downloaded from:
Would it be possible for you to test the proposed kernel and post back if it
resolves this bug?
See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.
Thank you in advance!
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Also
Re bot, the stated command can't be run because the system will not boot
to a bash prompt.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Tags added: bionic
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Title:
Kernel 4.15.0-15 breaks Dell PowerEdge 12th Gen servers
Status in linux package in Ubuntu:
Looks similar to the issue I am having on my HP ProLiant, where it hangs
then panics at boot on 4.15.0-15. In my case, it's hanging on the HP
Smart Array driver, here's the bug in question
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1765105
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** Package changed: ubuntu => linux (Ubuntu)
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Title:
Kernel 4.15.0-15 breaks Dell PowerEdge 12th Gen servers
Status in linux
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