On 08/30/2013 01:31 PM Ahmed wrote: > On 08/30/2013 02:56 AM, ken wrote: >> Also, for each boot instance, save off and compare /var/log/Xorg.0.log >> as this is where such problems will be reported. (To "save off" here, >> you should do something like "cat Xorg.0.log> Xlog.kernel.1".) >> >> >> On 08/30/2013 02:28 AM brandon whitehead wrote: >>> Hello Ahmed, >>> Nothing else besides kernel has changed? I'd reboot and revert to previous >>> kernel to test the issue. >>> -Brandon >>> >>> >>> On Sat, Aug 31, 2013 at 2:43 AM, Ahmed<ahmed.daud500 at gmail.com> wrote: >>> >>>> Hi there, >>>> >>>> i recently installed centos 6 64bit version on my HPProBook4530s >>>> Laptop. i then issued the command to update the kernel only. it updated >>>> the kernel to latest stable 2.6.32-358.14.1.el6.x86_64 kernel. >>>> After update what i got is that my touchpad is not working. i am 1000% >>>> certain that new kernel caused this problem. so, what i should do with >>>> the kernel to overcome this problem or any other suggestion? >>>> >>>> Warm Regards, >>>> Ahmed Dawood > .... > Thanks Ken, > i tried to got a clue of problem in Xorg.0.log file in both kernels. but > i was unable to get it. The thing i notice is that in old kernel Xorg > log file is > > (II) config/hal: Adding input device ImPS/2 Synaptics TouchPad > (II) XINPUT: Adding extended input device "ImPS/2 Synaptics TouchPad" > (type: MOUSE) > > Where in the new kernel Xorg file contains > > (II) config/hal: Adding input device SynPS/2 Synaptics TouchPad > (II) XINPUT: Adding extended input device "SynPS/2 Synaptics TouchPad" > (type: TOUCHPAD) > > so does it make a difference? It's not likely that files were simply renamed for no reason. So I'm thinking yes, there is a difference. And this is exactly the kind of difference we were looking for. So let's dig a little deeper. So try this: Boot each kernel and each time save the output of lsmod (e.g.: "lsmod > lsmod.kernel.1") and make separate copies of the file, /etc/X11/xorg.conf and then then look for differences in those two pairs of files.