Linux Installs

		Legend	YES	works out of box			works w/ workaround		NO	unresolved issues
				works but special note		n/a	not applicable (not supported)
			X20 / X21	X22 / X23 / X24	X60	X61	X61T Touch	X61T SXGA	T420	HP dv6900
	architecture		32bit	32bit	32bit	64bit w/ VT	64bit w/ VT	64bit w/ VT	64bit w/ VT	64bit
	memory		320-384MB	640MB	3GB	8GB	8GB	8GB	8GB	4GB
	tested kernels						3.2.x / 3.3.x		3.2.x / 3.3.x	3.2.x / 3.3.x
	fingerprint reader		n/a	n/a	NO	NO	NO	NO	n/a	n/a
	pen digitizer		n/a	n/a	n/a	n/a	ubuntu - work debian - doesn't work ABI mismatch	ubuntu - work debian - doesn't work ABI mismatch	n/a	n/a
	touchscreen / finger		n/a	n/a	n/a	n/a	ubuntu - works but not calibrated debian - doesn't work ABI mismatch	n/a	n/a	n/a
	rotate button		n/a	n/a	n/a	n/a	needs script	needs script	n/a	n/a
	wlan					YES	YES	YES	YES	required 3rd party kernel modules
	wlan power management (PM) support						broken after 2.6.30		YES	NO
		wlan model				3900	4965	?	Centrino	RealTek
	ethernet					YES	YES	YES	YES	disable PM or won't survive toggle
	ultrabay						need scripts
	hdpas					YES	YES	YES	must manually patch	n/a
	EC advanced battery function (stop / start charge)					YES	YES	YES	API broken, must use acpi_call	n/a
	tp_smapi					YES	YES	YES	must patch	n/a
	thinkfan (fan control)					YES	YES	YES	NO	n/a
	Undervolting support - PHC kernel					tested through liqorix	tested through liqorix	tested through liqorix	NO	tested through liqorix
		stable PHC VIDs					23 21 4 0			0 0 0 0
	integrated graphics					YES	YES	YES	YES	YES
		stable integrated parameters				i915	i915	i915		i915
	discrete graphics					n/a	n/a	n/a	requires 3rd party kernel module	n/a
	virtualbox					YES	YES	YES	YES	YES
	vmware					YES	YES	YES	YES	YES
	TP hotkeys					YES	YES	YES	YES	n/a
	wireless hotkey					need script for bluetooth toggle	need script for bluetooth toggle	need script for bluetooth toggle	need script for bluetooth toggle
	hibernate				YES	?	battery charge deterioration unless method = shutdown	?	YES	battery charge deterioration unless method = shutdown
	suspend				YES		YES		YES
	firewire				YES	YES	YES	YES	YES
	cardbus eSATA		random kernel panics on SATA I/O	random kernel panics on SATA I/O	YES	YES	YES	YES	n/a	n/a
	expresscard eSATA		n/a	n/a	n/a	n/a	n/a	n/a	YES	YES