atp

So, going back and fixing up auth on our few remaining older systems (centos 5, not internet facing) came across the error below. Solution was beautifully non obvious, so it goes here in the external memory pack.

yum --enablerepo=my-repo-x86_64  list updates
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: a.centos.mirror
 * epel: another.centos.mirror
 * extras: and.a.further.centos.mirror
 * updates: centos-updates.co.uk
my-repo-x86_64                                                                                                                                                       | 2.9 kB     00:00     
my-repo-x86_64/primary_db                                                                                                                                            | 7.1 kB     00:00     
http://myreposerver.internal.domain/my-repo/repodata/7d1016c9fcac64ee6c0fe9b5b\
 58ed1e791dae601b1b0be13ea8af523761fbabd-primary.sqlite.bz2: [Errno -3] \
 Error performing checksum
Trying other mirror.
my-repo-x86_64/primary_db                                                                                                                                            | 7.1 kB     00:00     
Error: failure: repodata/7d1016c9fcac64ee6c0fe9b5b58ed1e791dae601b1b0be13ea8af5\
  23761fbabd-primary.sqlite.bz2 from my-repo-x86_64: [Errno 256] \
  No more mirrors to try.

Do not pass go. Do not collect your new sssd binaries.

This caused me to waste 1/2 an hour or so this morning. It also needed some quite precise google-fu to uncover the solution. I'm bound to forget this and am likely to need it again so it's going here. I'm not sure how most of the zillions of "upload multiple files with php" tutorials out there work, because none of them seem to mention this.

I was doing multiple file uploads in php, and finding that although you submit multiple files with a multipart/form-data encoding type (and can see multiple files being submitted in chrome devtools), php was only reporting the last one in the list of uploaded files in $_FILES. Very annoying.

If you have an HP 6550b and its using the intel ironlake mobile graphics adaptor, you may find that ubuntu 10.04 and 10.10 don't handle the graphics properly. You'll get a black screen or a failure to start X.

The only way to boot seemed to be to use the VESA driver.

Typical errors in Xorg.0.log are;  no kernel modesetting driver detected

Put

i915.modesetting=1

into /etc/default/grub (Kernel Command Line)  and add to your current kernel boot command line in /boot/grub/grub.cfg.

UPDATE: It seems as though something has changed. I had a similar problem on a far more recent laptop (a sandybridge based dell 6420) and kernel, and it seems that the kernel parameter is now;

i915.modeset=1


So, if one doesn't work, try the other!