HOWTO Fix A Buggy DSDT File

[67GTA]

There were a couple of lines that caught my attention.

Line 92: Local APIC disabled by BIOS -- you can enable it with "lapic"
Line 148: weird, boot CPU (#0) not listed by the BIOS
Line 150: Local APIC not detected. Using dummy APIC emulation
Line 180: HPET not enabled in BIOS. You might try hpet=force boot option

Try booting with hpet=force and lapic separately and together to see if it makes a difference. I would also poke around in your BIOS settings to see if it has any ACPI options you can enable/disable. Maybe enable/diable ACPI or SMP (dual cores).

[67GTA]

Sorry, you need to add the boot options hpet=force and lapic to /boot/grub/menu.lst and reboot.

[rubax]

Attached are the three dmesg files where I have enabled lapic, hpet=force, and both.

The problem still persists...

[67GTA]

With both options, there are no errors. Maybe try those together with the DSDT. I'm about out of ideas. Is the battery calibrated? When was is calibrated last?

[67GTA]

I just ran across this: http://forums.lenovo.com/lnv/board/message?board.id=R_Series_Thinkpads&thread.id=4373

At least you know your not alone. This makes me wonder if it is a random defective battery or something. I would also consider doing a clean install to see if the problem persists. I'm still not sure if this is a bad install/upgrade, ACPI bug, or hardware/battery failure.

[rubax]

Well, thanks a lot for your help anyway. Somehow it helps knowing that I'm not alone (I especially like the fact that Windows has the same problem according to that link you posted ).

Exactly what did you mean by doing it with the DSDT? Should I add both hpet=force and lapic to /boot/grub/menu.lst, and compile my own dsdt again following the guide and then reboot? I'll try that very soon and post the results.

I have no idea how I calibrate the battery and if it was ever done, but I'll try to google it and see what I can find out...

[rubax]

Here's the dmesg when using dsdt and hpet=force and lapic. It didn't solve the problem. My laptop battery is lithium-ion and doing okay (I can use it for 1.5-2 hours with the usb-modem in), so from what I understand recalibration wont work. Btw. I tested plugging in a standard 2GB usb flash drive instead of the usb-modem and then disconnecting the power, but the computer starts to reboot. It's only the usb-modem that lets me run on battery - I still think that's a bit weird...

Thanks for all your help and time! Is there a place to give users an official thumbs up on this forum?

[NarsilAnduril]

Hi,

Weired. Found my old Evo'dsdt in in the sourceforge project hompage but the downloaded file isn't in valid gzip format.

Is something wrong with me ?

[67GTA]

Here's the dmesg when using dsdt and hpet=force and lapic. It didn't solve the problem. My laptop battery is lithium-ion and doing okay (I can use it for 1.5-2 hours with the usb-modem in), so from what I understand recalibration wont work. Btw. I tested plugging in a standard 2GB usb flash drive instead of the usb-modem and then disconnecting the power, but the computer starts to reboot. It's only the usb-modem that lets me run on battery - I still think that's a bit weird...

Thanks for all your help and time! Is there a place to give users an official thumbs up on this forum?

I would post a bug on launchpad. Maybe the devs will see something I don't.

[67GTA]

Hi,

Weired. Found my old Evo'dsdt in in the sourceforge project hompage but the downloaded file isn't in valid gzip format.

Is something wrong with me ?

I have had this happen several times with downloads from there. It has to do with the program used to compress the data. A lot of them are .asl which is not human readable. It is most likely in ASCII format. I don't understand why people do this. That is why I tell everyone to use iasl to decode their .asl to .dsl which is human readable text before they send it to me. You can use the file command to tell you what is inside. Open a terminal and run

file name_of_file.gz

If you follow the first post in this thread and get your dsdt.dsl, post it and I will fix it for you.