HOWTO Install Gentoo Linux: Troubleshooting

From Gentoo Linux Wiki

[edit] Troubleshooting

The first step may be, in fact, to take a look at the official Gentoo Linux Frequently Asked Questions.

[edit] Error Messages During Boot Process

Did you:

• mount /proc?
• mount /dev?
• link localtime?
  • rm /etc/localtime; ln -s /usr/share/zoneinfo/${TIMEZONE} /etc/localtime
  • failure to do this causes `date` to fail as well as many php scripts - anything that converts from unix-time to real time
• figure out how to make volume group devices appear?
  • vgchange -a n; vgchange -a y; vgchange -a n; vgchange -a y
  • vgexport -a vg0 (export all the volumes)
  • vgimport -a vg0 (import all the volumes into the existing system)

[edit] Compile Issues

First rebuilding with simpler {C,CXX,LD}FLAGS:

CFLAGS="-O2 -pipe -march=i686" \
CXXFLAGS="${CFLAGS}" \
LDFLAGS=" " emerge ${PACKAGE}

1. If that works, then troubleshoot by readding all of your CFLAGS one-by-one, then LDFLAGS. That's how I came up with the CFLAGS I'm using so I believe that they should work flawlessly so far as you change the -mtune option to match your arch.
2. Check http://bugs.gentoo.org for a similar bug, file one if necessary.

[edit] DNS Problems

• DNS name resolution works for root only. /etc/resolv.conf has the wrong permissions; chmod it as follows:

chmod 0644 /etc/resolv.conf