ac_dispatcher Posted November 21, 2003 Report Share Posted November 21, 2003 (edited) OK I could get acpi working in 9.1 real easy. MDK9.2 its a no go. on boot: Looking for DSDT in initrid ... not found! ACPI breakpoint: Executed AML Breakpoint opcode What does that mean? I have tried other kernels with no luck. Any idea? In my lilo.conf it states acpi=ht (I think it was ht not home right now) what does ht mean? when I change it to acpi=on I get the above error. I do believe that when I first did a mdk upgrade (9.1 to 9.2) acpi worked if I used the 9.1 kernel. But do to many upgrade issues I had to do a clena install. Edited November 21, 2003 by ac_dispatcher Quote Link to comment Share on other sites More sharing options...
bvc Posted November 21, 2003 Report Share Posted November 21, 2003 http://www.ussg.iu.edu/hypermail/linux/ker...310.0/0521.html http://www.intel.com/technology/iapc/acpi/...os_override.htm Google wants to be your friend :P Quote Link to comment Share on other sites More sharing options...
ac_dispatcher Posted November 21, 2003 Author Report Share Posted November 21, 2003 Found it Error scenario: When enabling ACPI in the kernel (by removing acpi=ht from the kernel boot options), the system freezes very early Why: There seems to be a bad interaction with Local APIC, which is enabled by default in the kernel. This can be seen by adding vga=0 to try to see the last kernel message before it locks solid (a message like "Looking for DSDT in initrd... not found"). This seems to happen with certain HP laptops. Other reports also indicate that if you remove AC power from a laptop (ie. Dell latitude C640; possibly others) it will freeze requiring a power off. (re: Bugzilla #5821) Solution: Add "nolapic" to the kernel boot options to resolve both issues. http://www.mandrakelinux.com/en/errata.php3#nolapic Quote Link to comment Share on other sites More sharing options...
bvc Posted November 21, 2003 Report Share Posted November 21, 2003 If your remove acpi=ht, acpi will not work. Or, have they built acpi INTO the kernel instead of as modules? That would be insanely stupid but wouldn't suprise me a bit. ACPI use to only work with acpi=on as a kernel parameter which is how it should be. So, the errata makes no sense to me. For ML9.1 I had to acpi=off noapic . If I tried to enable either, nothing worked rt. ML9.2 onlt acpi=ht will enable anything to work. Any other parameter screws everything up. They seem to have taken a step backward. So did it work for you? Is acpi being used? What chipset? Quote Link to comment Share on other sites More sharing options...
ac_dispatcher Posted November 22, 2003 Author Report Share Posted November 22, 2003 I havent had a chance yet. I may this weekend. Ill advise what happens. Ill look for the chipset. Its a HP ze5185 Laptop. Quote Link to comment Share on other sites More sharing options...
ac_dispatcher Posted November 22, 2003 Author Report Share Posted November 22, 2003 OK I got it to work lilo.conf: boot=/dev/hda map=/boot/map vga=normal lba32 default="WindowsXP" keytable=/boot/us.klt prompt nowarn timeout=100 message=/boot/xray-blue.boot #message=/boot/penguins.boot #message=/boot/message #menu-scheme=wb:bw:wb:bw image=/boot/vmlinuz-2.4.22-10mdk label="Mandrake9.2" root=/dev/hda7 initrd=/boot/initrd-2.4.22-10mdk.img append="devfs=mount hdc=ide-scsi acpi=on nolapic resume=/dev/hda9 splash=silent" vga=788 read-only other=/dev/hda2 label="WindowsXP" table=/dev/hda other=/dev/fd0 label="floppy" unsafe image=/boot/vmlinuz-2.4.22-10mdk label="default" root=/dev/hda7 initrd=/boot/initrd-2.4.22-10mdk.img append="devfs=mount hdc=ide-scsi acpi=ht resume=/dev/hda9 splash=silent" vga=normal read-only ### notice the acpi=on. If it was acpi=ht it would not work(with my Laptop) I have read somewhere that acpi=force sometimes works also Quote Link to comment Share on other sites More sharing options...
schussat Posted November 22, 2003 Report Share Posted November 22, 2003 initrd=/boot/initrd-2.4.22-10mdk.img append="devfs=mount hdc=ide-scsi acpi=on nolapic resume=/dev/hda9 splash=silent" Have you used suspend on your laptop? So far, with kernel 2.4.22-10, it's the one function that doesn't work for me. Any luck in your case? Quote Link to comment Share on other sites More sharing options...
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