I can confirm the same behavior (unable to select on the same headphones
(Sony WH-1000XM5). When I look at the device in the "pacmd list-cards"
output I see:
profiles:
a2dp_sink: High Fidelity Playback (A2DP Sink) (priority 40,
available: yes)
handsfree_hea
What instance type saw this kernel panic?
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Title:
3.13.0-155.205 Kernel Panic - divide by zero
Status in linux package in Ubuntu:
I imagine CONFIG_XEN_BALLOON_MEMORY_HOTPLUG is set for the Ubuntu
kernel?
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Title:
Amazon I3 Instance Buffer I/O error on dev nvme0n1
Yes, ballooning has been a constant source of problems which is why it
is disabled in Amazon Linux AMI.
We do not currently support DMA to/from guest physical addresses outside
of the E820 map for ENA networking or NVMe storage interfaces. This
effectively means that ballooning needs to be disable
Dan,
It appears that the requests that are being submitted refer to DMA
addresses that exceed the guest physical memory range, and this is why
the requests are being failed. The address seen is outside the E820 map:
[ 0.00] e820: BIOS-provided physical RAM map:
[ 0.00] BIOS-e820: [mem 0x0
Dan,
This BUG_ON has been demoted to only trigger when DEBUG_VM is set in
upstream:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=97ee4ba7cbd30f1858f0d16911e042737c53f2ef
I'm looking into why there's a one page difference between the E820
tables and SRAT. You're right
Hi Stefan,
I looked at this a long time back (circa 2011), and things may have
changed since then. See:
https://forums.aws.amazon.com/thread.jspa?threadID=59753
When I looked at this last, we weren't emulating TSC and the CPUID flags
that advertise invariant TSC came through. This was making the
Not precisely. What toolstack are you using? I can try to reproduce
outside of our control plane with a config file that would work on your
toolstack.
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Boris, all:
We did a test with disabling the SRAT entirely, but the balloon messages
persisted.
ami-af8d9ac6 (ubuntu/images-milestone/hvm/ubuntu-
trusty-14.04-beta2-amd64-server-20140326)
$ dmesg | grep -i 'srat\|node\|numa\|balloon' |grep -iv inode
[0.00] No NUMA configuration found
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