On Tue, 2011-06-28 at 08:09 +0200, Hans Ekbrand wrote: > On Mon, Jun 27, 2011 at 11:21:26PM +0100, Ben Hutchings wrote: > > On Mon, Jun 27, 2011 at 11:28:34PM +0200, Hans Ekbrand wrote: > > > Package: linux-source-2.6.39 > > > Version: 2.6.39-2 > > > Severity: normal > > > > > > Summary: I recompiled with make menuconfig, loaded the default > > > config for linux-image-2.6.39-486-2 into menuconfig, disabled ACPI, > > > enabled APM (but not the sub-items of APM in menuconfig). Then > > > booted this image with "apm=on" and now: > > > > > > # apm -S > > > No APM support in kernel > > > > So apm lies... > > > > > selected output from dmesg: > > > > > > $ dmesg | grep -i apm > > > [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-2.6.39 root=/dev/mapper/amin-root ro apm=on quiet > > > [ 12.378224] apm: BIOS not found. > > [...] > > > > Well, are you sure that this machine does have APM BIOS support? > > Because the kernel cannot use APM that is not there... > > Yes I am sure, because apm -S has worked perfectly on this particular > machine with older kernels. Could it be a battery thing? Otherwise I > know APM is supported by that BIOS. > > This is an old compaq laptop, "Armada 1540D", so I don't expect the > BIOS to be perfectly compliant with the standards. But it did work > with older official debian kernels, however, this is the first time I > have tried a custom kernel on it. Which was the last version it worked on? > That I did not enable the sub-itmes of APM in menuconfig, might that > be a problem? Yes, but that doesn't explain the 'apm: BIOS not found' warning. > They were described as "(NEW)", so I thought that they > cannot be necessary, but later on I saw that they have been "(NEW)" > for the last ten years or so :-) In menuconfig, '(NEW)' means that the variable has not yet been explicitly set or unset. It does *not* mean that the variable is new in this kernel version. You will probably want APM_DO_ENABLE and APM_CPU_IDLE. Ben. -- Ben Hutchings In a hierarchy, every employee tends to rise to his level of incompetence.
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