On Aug 04, 10 09:27:29 +0800, Zhang Rui wrote: > On Tue, 2010-08-03 at 18:11 +0800, Matthias Hopf wrote: > > The .bind_info is later used in acpi_video_resume() to re-set the backlight > > - but it's only evaluated on the active_list[], on which all .bind_info are > > NULL by construction. > why? .bind_info in active_list is initialized in acpi_video_device_bind. Hm. Right. acpi_video_bus_get_one_device() is called after _enumerate(). Dunno why I didn't read this correctly. > > I don't understand > > why the list is (partially) transformed into an array in the first place, > > especially as both the array *and* the list are used in the code... > > > no, the active_list is an array in fact, which equals > acpi_video_bus->attached_array. Maybe we need to change it to a more > proper name. :-) > I'm still wondering why the patch works for you. Same to me. > could you please attach the acpidump output of this laptop? Will do. > please rebuild your kernel with CONFIG_ACPI_DEBUG=y, and reboot with > kernel parameter "acpi.debug_layer=0x10 acpi.debug_level=0x400". > and attach the dmesg output after resume, both w/ and w/o the patch you > attached. The most intriguing thing here is that the system starts writing to /var/log/messages continuously, thus dmesg output is sort-of worthless. This might be a reasonable side effect, it might be an indication of the original issue. I'll try to compile something for you. Thanks Matthias -- Matthias Hopf <mhopf@xxxxxxx> __ __ __ Maxfeldstr. 5 / 90409 Nuernberg (_ | | (_ |__ mat@xxxxxxxxx Phone +49-911-74053-715 __) |_| __) |__ R & D www.mshopf.de -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
