Dell XPS 15z
Hangs on boot
Sometimes when booting the laptop with the default kernel it would hang at uevent detection. To prevent this from happening, append the following to the kernel parameters:
Dell XPS 15z has two graphics processors installed, Intel integrated graphics and NVIDIA GeForce GT 525M. The NVIDIA card is using Optimus technology.
See Intel for details on using the Intel GPU.
Another way, which allows to use Optimus technology is Bumblebee.
Using the Intel card without any modifications can result in poor video performance. A quick fix is to edit boot options of your boot loader and append the following to the kernel parameters:
Boot time errors
If you encounter boot time errors with Intel graphics, add the
intel_agp modules to
... MODULES=(intel_agp i915)
Then regenerate the initramfs.
Touchpad and keyboard
The touchpad is fully supported in kernels 3.9 and later. Make sure to install
xf86-input-synaptics as well as a program such as synaptiks so that you can customize all of the features.
Keyboard is not working
In case your keyboard is not working after installing Arch, or after upgrading older installation append the following to your kernel parameters:
As mentioned above, this problem should not occur in new installations, although may in some cases of customized installs.
To make the card reader function enter the following command:
# echo 1 > /sys/bus/pci/rescan
This will allow it to auto mount cards until the next reboot.