I get this problem about 85% of the time in Intrepid, and I haven't
narrowed down the magic that brings up all four cores. It worked
flawlessly for weeks, and downgrading to 2.6.27-9 from 2.6.27-11 didn't
bring back all of my cores.
** Attachment added: uname -a, /proc/cpuinfo, dmesg on AMD
@Paulo, care to open a new bug report as it seems you have different
hardware than the orignal bug reporter and Adam has commented this is
resolved for Intrepid.
** Changed in: linux (Ubuntu)
Status: Incomplete = Fix Released
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Only one core working on dual core CPU
I'm experiencing the same problem with intrepid beta 1 and a turion
tl-60 x2.. i need to activate nolapic in order to be able to
suspend/resume (if i dont, it just hangs), BUT i loose a cpu. i suspect
the resume/suspend failure is a smp issue, since it works fine with one
cpu disable via nolapic.
As stated on 2008-09-05 this is now fixed in Intrepid (both i686 and
amd64). Hardy i386 still has the issue even with the latest updates.
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Only one core working on dual core CPU
https://bugs.launchpad.net/bugs/215785
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Thanks for the update. Adam, can you comment if this is fixed for you
with the most recent Intrepid updates? Thanks.
** Changed in: linux (Ubuntu)
Status: New = Incomplete
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Only one core working on dual core CPU
https://bugs.launchpad.net/bugs/215785
You received this bug
Updated Ibex today and the issue no longer exists for me. I also don't
need to specify the nolapic option at boot time either.
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Only one core working on dual core CPU
https://bugs.launchpad.net/bugs/215785
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** Changed in: linux (Ubuntu)
Status: Confirmed = New
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Only one core working on dual core CPU
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** Changed in: linux (Ubuntu)
Status: New = Confirmed
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Only one core working on dual core CPU
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Same problem here with Intrepid Alpha 5 (amd64 kernel .27-2.3). Was not
a problem with Hardy amd64 (latest) or Intrepid Alpha 4 previous amd64
kernel.
Hardware is HP Pavilion tx1302au Tablet PC with AMD Turion 64 TL-58 dual
core 1.9 ghz CPU with nVidia Go 6150 motherboard.
I need to specify the
** Attachment added: cat /proc/cpuinfo for amd turion tl-58 mobile cpu
http://launchpadlibrarian.net/17344252/cpuinfo.txt
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Only one core working on dual core CPU
https://bugs.launchpad.net/bugs/215785
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** Attachment added: lspci -vv for amd turion 64bit tl-58 1.9 ghz mobile cpu
http://launchpadlibrarian.net/17344256/lspci-vv.txt
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Only one core working on dual core CPU
https://bugs.launchpad.net/bugs/215785
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I've tested this evening with Intrepid daily-live 04-Aug-08 and both
cores were working under 32bit. The problem still exists with the latest
Hardy kernel.
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Only one core working on dual core CPU
https://bugs.launchpad.net/bugs/215785
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The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the
upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would
appreciate it if you could please test this newer 2.6.27 Ubuntu kernel.
There are one of two ways you should be able to test:
1) If you are comfortable
Under Hardy 64bit daily (11/04/08) both cores are detected, still an
issue on 32bit.
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Only one core working on dual core CPU
https://bugs.launchpad.net/bugs/215785
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** Attachment added: Dmesg output. Lines 74-122 look relevant.
http://launchpadlibrarian.net/13359493/dmesg
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Only one core working on dual core CPU
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** Attachment added: lspci -vv
http://launchpadlibrarian.net/13359503/lspci
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Only one core working on dual core CPU
https://bugs.launchpad.net/bugs/215785
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** Attachment added: cat /proc/cpuinfo
http://launchpadlibrarian.net/13359517/cpuinfo
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Only one core working on dual core CPU
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