LaptopTestingTeam/Old/HPdv5z

HPdv5z

Contact: AlexanderDreyzen
Make: HP
Brand: Pavilion
Model: dv5z - 1000
Website: HP dv5z

Current Issues

CPU Temperature

The ACPI DSDT table in the BIOS is non-compliant, which prevents the reading of the CPU temperature. In order to read the CPU table, the DSDT table has to be overridden by giving a modified table to the kernel in the initrd image.

CAUTION: Editting and overriding the DSDT table could damage your laptop and the necessary changes may be BIOS version dependent!

The current DSDT from the BIOS needs to be copied from /proc/acpi/dsdt to a location where it can be worked on by

sudo cat /proc/acpi/dsdt > /some-folder/dsdt.aml.old

The copied table is in a compiled form (aml) that is not easy to work with. It can be decompiled into source (dsl) which can be edited and recompiled. The compiler (iasl) can be obtained by installing the the iasl package. Decompile the aml file by

iasl -d dsdt.aml.old

This produces the file dsdt.aml.dsl which is the source code. Edit it at around line 9400 (might be BIOS version dependent) looking for the text

Method (_HOT, 0, Serialized)
{
    If (LEqual (TPOS, 0x40))
    {
        Return (Add (0x0AAC, Multiply (TPC, 0x0A)))
    }
}

Method (_CRT, 0, Serialized)
{
    If (LLess (TPOS, 0x40))
    {
        Return (Add (0x0AAC, Multiply (TPC, 0x0A)))
    }
}

The If statements are checking the TPOS variable. This checks which operating system is being run. Windows is 0x40 or 0x41 while linux is 0x80. The DSDT table from the BIOS essentially tells ACPI that linux cannot read the temperature when it actually can. This can be fixed by commenting out the If statements and their respective brackets. Do not make any other changes unless you know what you are doing! Afterwards, it should look like this:

Method (_HOT, 0, Serialized)
{
//    If (LEqual (TPOS, 0x40))
//    {
        Return (Add (0x0AAC, Multiply (TPC, 0x0A)))
//    }
}

Method (_CRT, 0, Serialized)
{
//    If (LLess (TPOS, 0x40))
//    {
        Return (Add (0x0AAC, Multiply (TPC, 0x0A)))
//    }
}

Now the dsl file needs to be recompiled to aml. This is done by the command

iasl dsdt.aml.dsl

Which outputs the aml file dsdt.aml.aml hopefully as opposed to an error message. This file has to be put into your initrd. First, copy it by the following:

sudo cp dsdt.aml.aml /etc/initramfs-tools/DSDT.aml

where it will be loaded into the initrd when it is updated. It is suggestible to have more than one kernel installed and only update the initrd for the most recent current version so that a fall back kernel using the DSDT from the BIOS is still available. Update the appropriate initrd by

sudo update-initramfs -u -k kernel-version

(if you have no clue about your kernel version, just running

sudo update-initramfs -u -k `uname -r`

should do the job).

Reading the CPU temperature should now be possible the next time the kernel is booted.

System Info

HP Pavilion dv5z
AMD Turion(TM) X2 Ultra Dual-Core Mobile Processor ZM-80 (2.1 GHz)
15.4" diagonal WXGA High-Definition HP Widescreen Display (1280 x 800)
2GB DDR2 System Memory (2 Dimm)
ATI Radeon(TM) HD 3200 Graphics
160GB 5400RPM SATA Hard Drive
Webcam
802.11a/b/g/n WLAN and Bluetooth
8X DVD+/-R/RW with Double Layer Support
6 Cell Lithium Ion Battery

Hardware details

Screen & Monitors
Device	Works?			Bug #
Device	in 8.04.1 LTS	in 8.10 Alpha4	in 8.10 Daily Build	Bug #
Screen	Yes	Untested	Yes
Correct resolution?	Yes	Untested	Yes
Correct refresh rate?	Yes	Untested	Yes
3D Acceleration	Yes	Untested	Yes
External monitor works?	Untested	Untested	Untested
External monitor - mirrors	Untested	Untested	Untested
External monitor - extend desktop	Untested	Untested	Untested
Power Management
Battery detected?	Yes	Untested	Yes
Hibernates?	Untested	Untested	No
Suspend	Untested	Untested	No
Dim monitor on battery	Yes	Untested	Dims:Yes Back:No
Blank monitor on inactivity	Untested	Untested	Yes
Lid Close	Dim:Yes Hibernate:Untested	Untested	Dim:Yes Hibernate:No
Cpu frequency scaling	Yes:difficult	Untested	No
Cpu temperature	Yes:acpi DSDT override	Untested	Untested
Sound
Sound works?	Yes	Untested	Yes
Correct volume?	Yes	Untested	Untested
Hardware volume switch	Yes	Untested	Yes
Headphone jack	Yes	Untested	Plug:Yes Unplug:No
Internal mic	Untested	Untested	Untested
Mic jack	Untested	Untested	Untested
Networking
Wired NIC	Yes	Untested	Yes
Wireless NIC	Untested	Untested	Unstable
PCMCIA NIC	Untested	Untested	Untested
Firewire	Untested	Untested	Untested
Bluetooth	Untested	Untested	Untested
Modem	Untested	Untested	Untested
Infrared	Untested	Untested	Untested
Touchpad & Mice
Touchpad	Yes	Untested	Yes
Touchpad - Doubletap = double click	Yes	Untested	Yes
Touchpad - Scroll down side	Yes	Untested	Yes
External mouse - USB	Yes	Untested	Untested
External mouse - Serial	Untested	Untested	Untested
Docking Station/Port Replicator
AC through replicator	Untested	Untested	Untested
USB	Untested	Untested	Yes
Serial	Untested	Untested	Untested
Parallel	Untested	Untested	Untested
External Monitor - VGA	Untested	Untested	Untested
External Monitor - DVI	Untested	Untested	Untested
Modem	Untested	Untested	Untested
NIC	Untested	Untested	Untested
PS/2	Untested	Untested	Untested
Additional Hardware
Fingerprint reader	Untested	Untested	Untested
CD/DVD drive	Yes	Untested	Yes
PCMCIA cards	Untested	Untested	Untested
Parallel Ports	Untested	Untested	Untested
Card reader(s)	No	Untested	Untested
Webcam	Yes	Untested	Untested
Remote	Yes	Untested	Untested

Function and other keys
Fn key	Operation	Keycode	Works?			Bug #
Fn key	Operation	Keycode	in 8.04.1 LTS	in 8.10 Alpha4	in 8.10 Daily Build	Bug #
+ Space			Untested	Untested	Untested
+ Esc			Untested	Untested	Untested
+ F1	Help		Untested	Untested	Untested
+ F2	Print		Untested	Untested	Untested
+ F3	Web Browser		Yes	Untested	Untested
+ F4	Change Video Output		Untested	Untested	Untested
+ F5	Sleep		Yes	Untested	Untested
+ F6	Lock		Untested	Untested	Untested
+ F7	Dim		Yes	Untested	Untested
+ F8	Brighten		Yes	Untested	Untested
+ F9	Play/Pause		Yes	Untested	Untested
+ F10	Stop		Yes	Untested	Untested
+ F11	Rewind/Previous		Yes	Untested	Untested
+ F12	Fast Forward/Next		Yes	Untested	Untested
Other special keys
Key	Operation	Keycode	Works?			Bug #
Key	Operation	Keycode	in 8.04.1 LTS	in 8.10 Alpha4	in 8.10 Daily Build	Bug #
Windows key + E	open all workspace		Untested	Untested	Untested

Untestedtes

CategoryLaptop