So, just today I noticed a problem with kernel 2.6.18-194 (CentOS 5.5) on several Intel DP965LT systems; the system beeps (such as terminal beeps) are no longer passed through to the external speakers. This is a problem because in our situation the boxes are distant from their monitor/keyboard, the system speaker on this motherboard is extremely weak, and there are no system speaker header pins on the motherboard. The problem goes away if I revert the system to 2.6.18-164 with no other changes. I looked through the list archives and searched the web for other people who have encountered this, but it's pretty specific (and hard to search for "system beep"!) Is there someplace can I find *detailed* release notes on the differences between -164 and -194 kernels to help in looking for the problem, pinning it down, and submitting a patch (and/or building my own kernel), or should I just download the SRPMS and dig in?
Thanks, -G. -- Glenn Eychaner (geychaner@lco.cl) Telescope Systems Programmer, Las Campanas Observatory
On Wed, Aug 25, 2010 at 2:39 PM, Glenn Eychaner geychaner@mac.com wrote:
So, just today I noticed a problem with kernel 2.6.18-194 (CentOS 5.5) on several Intel DP965LT systems; the system beeps (such as terminal beeps) are no longer passed through to the external speakers. This is a problem because in our situation the boxes are distant from their monitor/keyboard, the system speaker on this motherboard is extremely weak, and there are no system speaker header pins on the motherboard. The problem goes away if I revert the system to 2.6.18-164 with no other changes. I looked through the list archives and searched the web for other people who have encountered this, but it's pretty specific (and hard to search for "system beep"!)
Does it have Nvidia controllers? If so, it may be related to:
http://bugs.centos.org/view.php?id=4335
Is there someplace can I find *detailed* release notes on the differences between -164 and -194 kernels to help in looking for the problem, pinning it down, and submitting a patch (and/or building my own kernel), or should I just download the SRPMS and dig in?
You can find kernel changelog diffs here (maintaind by Alan Bartlett):
http://www.centos.toracat.org/ajb/kernel-clog-diff/
Akemi
Akemi Yagi wrote, On 08/25/2010 05:56 PM:
On Wed, Aug 25, 2010 at 2:39 PM, Glenn Eychaner geychaner@mac.com wrote:
Is there someplace can I find *detailed* release notes on the differences between -164 and -194 kernels to help in looking for the problem,
You can find kernel changelog diffs here (maintaind by Alan Bartlett):
What you get out of those diffs that LASTKERNELINSTALLED=`rpm -qa --last kernel kernel-xen | \ head -1|awk '{print $1}'` #*** rpm -q --changelog $LASTKERNELINSTALLED |less does not provide?
I was curious enough to see if that was a better resource for some of the research that I do to take a look, but _I_ only found it more confusing, so I ask what you see that I missed.
*** Why Oh Why, did RH&Co decide to name the xen kernel rpms something other than kernel-`uname -r`???? kernel-2.6.18-194.11.1.el5xen seems to have the same info to me.
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Akemi Yagi -
Glenn Eychaner -
Todd Denniston