https://bugzilla.kernel.org/show_bug.cgi?id=24172
Summary: No thermal sensors on HP tx 2500 series because of
flawed DSDT
Product: ACPI
Version: 2.5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Thermal
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
The DSDT of my HP tx2510 contains the following code:
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)))
}
}
which basically disables thermal sensors for any operating system that is not
Windows. For more details, see
https://wiki.edubuntu.org/LaptopTestingTeam/Old/HPdv5z
which also suggests to comment out the check.
Since it is no more possible to load customized DSDTs however, the above howto
is now useless, but I was told that the problem can be fixed directly in the
kernel.
Needless to say I tried contacting HP in all ways I could conceive, but (also
because my warranty is over) I doubt anyone there cared at all - certainly, I
was not contacted back and there were no BIOS updates in the last year.
In case it's useful, the current BIOS can be downloaded through:
http://ftp.hp.com/pub/softpaq/sp45001-45500/sp45056.exe
I'm available for any additional information/testing.
--
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.
------------------------------------------------------------------------------
Increase Visibility of Your 3D Game App & Earn a Chance To Win $500!
Tap into the largest installed PC base & get more eyes on your game by
optimizing for Intel(R) Graphics Technology. Get started today with the
Intel(R) Software Partner Program. Five $500 cash prizes are up for grabs.
http://p.sf.net/sfu/intelisp-dev2dev
_______________________________________________
acpi-bugzilla mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
