Sorry, I don't know enough about kernels. I would have thought a Debian
kernel at a certain level was the same as an Ubuntu one.
I will make some more test (like with older kernels) tomorrow.
Thanks again for your interest.
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In order to answer your last question, I just booted a Debian system
$ uname -a
Linux jon-debian 3.2.0-4-amd64 #1 SMP Debian 3.2.63-2 x86_64 GNU/Linux
and it also has the kernel panic:
$ dmesg | grep -i smp
[0.00] Linux version 3.2.0-4-amd64 (debian-ker...@lists.debian.org)
(gcc version
The hub is a D-Link model DUB-H7 with 6 ports of which 2 powered.
I get the problem with the my mouse, an external USB disk and an HP
Officejet 2620 printer plugged into the D-Link. My Samsung Syncmaster
T240 screen hub, the D-link and a Logitch K120 keyboard are plugged
directly into the computer
Tested with upstream kernel vmlinuz-3.18.0-031800rc2-generic. The
problem of an off-line CPU remains:
$ lscpu
Architecture: x86_64
CPU op-mode(s):32-bit, 64-bit
Byte Order:Little Endian
CPU(s):2
On-line CPU(s) list: 0
Off-line CPU(s) list: 1
Thread(s
Public bug reported:
When booting with a D-Link USB hub connected, the boot process "finds"
only one core of my dual-core CPU:
$ dmesg | grep -i smp
[0.00] Linux version 3.13.0-37-generic (buildd@kapok) (gcc version
4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC
Bug still exists on Kubuntu 14.04, kernel vmlinuz-3.13.0-37-generic. Not
on every boot, but well over half of them. After boot, second CPU (core)
is not available.
l$ lscpu
Architecture: x86_64
CPU op-mode(s):32-bit, 64-bit
Byte Order:Little Endian
CPU(s):
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