Proper uninstallation of proprietary Ati drivers on Fedora

To get rid of proprietary Ati drivers run the following commands.

sudo sh ati-driver-installer-11-6-x86.x86_64.run --uninstall=force
sudo yum reinstall mesa-libGL

This should leave the OS fine and dandy - ready for new drivers installation.

Huge fonts with nvidia proprietary drivers on Fedora

I've decided to move from open-source video drivers to Nvidia proprietary to get better performance and notebook battery-life. To do so I've installed the drivers using

sudo yum install kmod-nvidia-$(uname -r).

After restarting Xorg everything seemed ok - the new driver was loaded without Xorg crashing etc. Unfortunately I've noticed that some of the system fonts got bigger than expected. The resolution was ok so it must have been the DPI. Running

xdpyinfo | grep resolution

returned the resolution: 143x144 dots per inch. As I prefer smaller fonts I've entered the KDE System Setting to search for DPI settings. Finally I've found them in System Settings > Application Appearance > Fonts > Force Fonts DPI . Setting this value to 96 fixed my problem.

Fedora boot from a USB 3.0 hard drive

I've tried to boot my laptop using a USB 3.0 WD hdd. I've installed Fedora to this drive and everything worked fine as long as I used USB 2.0. When booting with the drive connected to a USB3.0 port the boot failed with the message: no root device found, boot failed sleeping forever. The UUID for boot and root partitions are the same using USB 2.0 and USB 3.0, with system booted from other drive I've found the module supporting USB 3.0 was xhci_hcd (lsmod | grep xhci). The module must have not been included in initramfs. To verify this I've decompressed the initramfs image and searched for xhci_hcd module.

mkdir initramfs
cd initramfs
gzip -dc /boot/initramfs-2.6.35.13-92.fc14.x86_64.img | cpio -id
find ./ -name "xhci*"

Search for xhci* returned no results so the module was not included in initramfs. To fix this situation one must rebuild the initramfs for used kernel. For safety reasons please backup your original initramfs image.

mkinitrd /boot/initramfs-$(uname -r).img $(uname -r) -f --preload xhci_hcd

According to Fedora wiki the xhci module was also disabled by default due to an issue with suspending. To enable this module add the following option to kernel's parameters.

xhci_hcd.enable=1

Finally try to fix the suspend issue of Fedora by executing the following command in terminal.

echo "SUSPEND_MODULES=\"xhci_hcd\"" > /etc/pm/config.d/xhci_hcd