## D.2. Kernel and Library Issues

LinuxPPC Release 5.0 was the first version of LinuxPPC to use Version 2.0 of the GNU C libraries (`glibc`). Previous versions used glibc 1.99, which has caused some porting headaches for developers. Kernel support has been quite good on PowerPC. When the 2.2 kernel was released, PowerPC was the first processor after x86 to get the new kernel ported and running. Version 2.2.1 of the kernel introduced drivers for Ultra/Wide SCSI cards and greatly improved support for the PowerBook G3 series, adding trackpad tapping, and screen brightness control support.

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