Description of problem: It's impossible to override DSDT using initrd method, despite the dsdt being found, the one used by the kernel still is the one provided by the bios Version-Release number of selected component (if applicable): Mageia 1 - on Fujitsu Siemens Esprimo Mobile U9200 How reproducible: 100% Steps to Reproduce: 1. dump dsdt table # cat /sys/firmware/acpi/tables/DSDT > dsdt_bios.dat 2. decode table using iasl package # iasl -d dsdt_bios.dat 3. edit decoded dsdt to fix some bugs. (in my case needed for Battery-state detection, it is to correct the nesting of an else statement, see https://wiki.ubuntu.com/LaptopTestingTeam/Old/FujitsuEsprimoU9200 for the concrete fix, but as the fix is irrelevant for the detection, just do a similar change) # vim dsdt_bios.dsl 4. compile the modified version and add it to the initrd & reboot # iasl -ta dsdt_bios.dsl # cp dsdt.aml /boot/dsdt.aml # echo "dsdt_files=/boot/dsdt.aml" >> /etc/sysconfig/mkinitrd # bootloader-config --action rebuild-initrds # shutdown -r now 5. verify that the dsdt from the initrd is "used" (more like: the dsdt did make it into the initrd - after all this bug is about that the modified version is not in action) # dmesg|grep -A1 custom ACPI: Checking initramfs for custom DSDT ACPI: Found DSDT in DSDT.aml. 6. dump dsdt table again - expected is that it would not be the same as the one from the bios # cat /sys/firmware/acpi/tables/DSDT > dsdt_modified.dat 7. compare the bios version and the one obtained after booting with the modified initrd: # md5sum dsdt_bios.dat dsdt_modified.dat 92ba2300e0f3d7bd519507120ae33b90 dsdt_bios.dat 92ba2300e0f3d7bd519507120ae33b90 dsdt_modified.dat â major bug, as overriding the buggy dsdt is the only way to get proper hardware support esp. one some older hardware.
Assignee: bugsquad => tmb
Can you provide full dmesg output
Created attachment 843 [details] dmesg log with modified dsdt in initrd not sure how the full dmesg log would help here as the additional line "ACPI: Found DSDT in DSDT.aml." is the only visible difference. Anyway, dmesg log is attached.
do you need more info? Can't you reproduce?
CC: (none) => liberforce
Any news on this? I posted bug 1563 (https://bugs.mageia.org/show_bug.cgi?id=1563) and I was told the bug lays on this one. Is there a way I can help to solve this?
CC: (none) => dbello
Good news (for me at least) is that alpha2/GNOME3 correctly handles the battery/ac state despite the apparently buggy DSDT - so either appropriate fixes went into the kernel, or GNOME3 uses a different method (once again) to check battery status. While it doesn't solve the original problem, it solves the reason for needing this workaround (at least for me - but worth to try with alpha2 and check whether the problem is fixed for you (Diego) as well)
Pinging, because nothing has happened with this report for more than 3 months, it still has the status NEW or REOPENED. Please set status to ASSIGNED if you think this bug was assigned correctly.
CC: (none) => marja11
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Status: NEW => RESOLVEDResolution: (none) => WONTFIX
I just tried this on Mageia 2 and still doesn't work. So far, the only way I can make my laptop see the battery is to recompile the kernel.
Status: RESOLVED => REOPENEDVersion: 1 => 2Resolution: WONTFIX => (none)
Source RPM: kernel-2.6.38.8-5.mga1.src.rpm => kernel
AFAIK, the kernel policy is to have BIOS problems fixed in the kernel, to avoid clumsy workarounds like changing the DSDT which may harm your hardware. So I think you should concentrate efforts on bug #1563.
Status: REOPENED => RESOLVEDResolution: (none) => WONTFIX