1 Frequently Asked Module User Questions
3 Q) I get "/usr/bin/ld: cannot find -lc"
4 A) You need to install a development package which contains libc.a.
6 Q) I'm using RedHat and modules don't autoload any more.
7 A) Old versions of RedHat turns module autoloading off if /proc/ksyms
8 isn't found. Change line 337 of /etc/rc.d/rc.sysinit from:
10 if ! grep -iq nomodules /proc/cmdline 2>/dev/null && [ -f /proc/ksyms ]; then
14 if ! grep -iq nomodules /proc/cmdline 2>/dev/null && [ -f /proc/modules ]; then
16 Q) Things still don't load properly.
17 A) Do you have an /etc/modprobe.conf? If not, use
18 generate-modprobe.conf to generate an /etc/modprobe.conf from your
21 Q) Sound doesn't load automatically.
22 A) You need to set up an alias (or install command) for "sound-slot-0" in
23 /etc/modprobe.conf: the ALSA sound system seems to want this.
25 Q) What is "[unsafe]" next to the module name in lsmod?
26 A) It means somone used an old-style interfaces to try to control this
27 module: these are slowly being tracked down and eliminated. You can
28 use "rmmod -f" to force removal if you configured your kernel with
29 CONFIG_MODULE_FORCE_UNLOAD set.
31 Q) I'm having trouble inserting out-of-tree modules
32 A) See kernel source tree documentation: Documentation/kbuild/modules.txt