Description of problem: 2.6.23.9-85.fc8 kernel brings out more ACPI error info in dmesg than 2.6.23.8-63.fc8. Shows below: +ACPI Error (evregion-0316): No handler for Region [ERAM] (f7d0d4d8) [EmbeddedControl] [20070126] +ACPI Error (exfldio-0289): Region EmbeddedControl(3) has no handler [20070126] +ACPI Exception (dswexec-0462): AE_NOT_EXIST, While resolving operands for [OpcodeName unavailable] [20070126] +ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.HTEV] (Node f7d12e58), AE_NOT_EXIST +ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.LPC0.EC0_._REG] (Node f7d0cbe8), AE_NOT_EXIST Version-Release number of selected component (if applicable): kernel version 2.6.23.9-85.fc8 H/W environment: Toshiba Laptop A135-S2386 I will add both dmesgs and the acpidump file for your reference.
Created attachment 290237 [details] demsg of 2.6.23.8-63.fc8
Created attachment 290238 [details] dmesg of 2.6.23.9-85.fc8
Created attachment 290239 [details] acpidump output
Also, the brightness buttons (Fn+F6/F7) of toshiba a135-s2386 still not work well(/proc/acpi/video/VGA/LCD/brightness works well, but pressing Fn+F6/F7 can only makes brightness up to the highest level, the gnome-panel brightness applet can not get laptop brightness). I knew there are some bug report about that issue and the new kernel (2.6.23.9-85.fc8) do have workaround code in the acpi/ec.c, so I upgraded to the new kernel, but now it seems that it does not help.
Possibly related: Kernel 2.6.23.9-85.fc8 royally locks up on reboot, and prevents BIOS from starting. The only way to recover is to physically unplug the machine for about a minute. On the same machine (Intel D865PERL motherboard & BIOS), previous kernel 2.6.23.8-63.fc8 reboots normally. BTW, "acpi=off" doesn't help, so the trouble with 2.6.23.9-85.fc8 may go beyond ACPI. Again, 2.6.23.8-63.fc8 works normally but 2.6.23.9-85.fc8 doesn't.
Problems in comment #4 are a separate item and should be fixed in 2.6.23.14-132. The EC messages should be fixed in 2.6.23.14-133
kernel-2.6.23.15-137.fc8 has been submitted as an update for Fedora 8
kernel-2.6.23.15-137.fc8 has been pushed to the Fedora 8 stable repository. If problems still persist, please make note of it in this bug report.