02-24-2012
The kernel is most certainly not completely self-contained if you know what a module is...
If you installed any drivers that didn't come with the kernel you should always, always reinstall or update them when you update your kernel.
Troubleshooting the actual problem may be more fruitful than messing with the kernel and hoping it goes away. Check your X11 server's logs for instance, to see if it's having problems enabling direct rendering. Check dmesg to see if the kernel actually IS struggling with anything. Check glxinfo to see if it's fallen back to software opengl and the like.
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DMESG(1) General Commands Manual DMESG(1)
NAME
dmesg - print or control the kernel ring buffer
SYNOPSIS
dmesg [-c] [-r] [-n level] [-s bufsize]
DESCRIPTION
dmesg is used to examine or control the kernel ring buffer.
The program helps users to print out their bootup messages. Instead of copying the messages by hand, the user need only:
dmesg > boot.messages
and mail the boot.messages file to whoever can debug their problem.
OPTIONS
-c Clear the ring buffer contents after printing.
-r Print the raw message buffer, i.e., don't strip the log level prefixes.
-s bufsize
Use a buffer of size bufsize to query the kernel ring buffer. This is 16392 by default. (The default kernel syslog buffer size was
4096 at first, 8192 since 1.3.54, 16384 since 2.1.113.) If you have set the kernel buffer to be larger than the default then this
option can be used to view the entire buffer.
-n level
Set the level at which logging of messages is done to the console. For example, -n 1 prevents all messages, except panic messages,
from appearing on the console. All levels of messages are still written to /proc/kmsg, so syslogd(8) can still be used to control
exactly where kernel messages appear. When the -n option is used, dmesg will not print or clear the kernel ring buffer.
When both options are used, only the last option on the command line will have an effect.
SEE ALSO
syslogd(8)
AVAILABILITY
The dmesg command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
DMESG(1)