K-Squared Ramblings

Resolving SELinux audit errors on boot in Fedora Core 4

I’ve upgraded two systems at work from Fedora Core 3 to Fedora Core 4: a desktop using the normal installer, and a test server upgrading with yum. The yum upgrade worked well except for two snags. The first was a conflict with the old kernel-utils package. I followed the recommendation by installing the new kernel first, rebooting, then removing the old kernel.

The second was that SELinux denied access to about a dozen services on start-up. It was in auditing mode, not enforcing mode, so the services still worked, but I wanted to be able to start enforcing the policy once I resolved some other issues.
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Invisible Grub Boot Menu

I recently upgraded my computer’s motherboard and processor, and spent the next few days trying to work out which glitches were hardware related and which were coincidental. One problem I had was that the GRUB bootloader menu would not appear when the computer started. It was clearly there. It would boot to the default operating system after 10 seconds. If I hit an arrow key it would stop and wait for me to choose an OS. It just didn’t show up. All I got was a black screen with a cursor in the upper left corner.

On top of that, when Linux started booting, the screen was messed up as if the character set had been run through a meat grinder. You could tell what the letters were, but there was a ton of extra garbage. Then, when init set the character set, the gibberish cleared up and the screen looked normal again.

I had been dealing with other problems that looked like video card or driver issues, but I eventually realized that the problem had nothing to do with the hardware upgrade.

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