Kernel Bug Tracker – Bug 9662
boot hang unless button press - EC: GPE = 0x10, I/O: command/status = 0x66, data = 0x62 - Acer 4520
Last modified: 2008-01-01 10:16:48 UTC
Most recent kernel where this bug did not occur: NA on this hardware
Distribution: LinuxMint 4.0
Hardware Environment: Acer 4520 (all stock)
Software Environment: Dual-Boot with Vista
Problem Description: Kernel hangs on boot at:
ACPI: EC: GPE = 0x10, I/O: command/status = 0x66, data = 0x62
Steps to reproduce:
I custom compiled the kernel to solve another ACPI issue which I may file a bug report for later. I will try with apci=off momentarily.
Oddly enough, when the power button is pressed, the kernel resumes booting and runs as normal!
acpi=off results in a kernel panic telling me to run with noapic, running with noapic results in it telling me that I need to run with pnpbios=off.
Finally, if I boot with "acpi=off noapic pnpbios=off" it hangs at loading my DVD-ROM, after about 5 minutes it will give an error dealing with a lack of a root file system, (no /dev/sda5).
This is the latest kernel, so this should be fixed, unless I did something stupid compiling it, then I should be fixed. :-P
Regardless, there have been similar errors on the two stock kernels that shipped with LinuxMint, the 126.96.36.199-generic fails to boot entirely (power button trick doesn't work) and 188.8.131.52-386 works with power button trick, albeit at a different point in the boot sequence.
Has any version of Linux every booted properly w/o workarounds on this box?
What is the difference between 184.108.40.206-generic which "fails entirely"
(and how does it fail, does it hang in a different place)
vs. 220.127.116.11-386, which you report like 18.104.22.168,
hangs at the ACPI EC message and continues upon a power button press?
Can you try 2.6.24-rc? There have been some EC issues fixed on Acers
in the latest release.
22.214.171.124-generic is a LinuxMint stock kernel. It would start booting, then fail to detect a /dev/root. Apparently, it wouldn't even recognize the hard drive as a device, thus it failed to boot entirely.
I am compiling 2.6.24-rc right now. So far everything has gone as normal.
Of note is that I attempted to install Fedora 8 and Fedora 8 Re-Spin (a 12-18-07 update to Fedora 8) and while both installed 100% normal, both failed to boot, both hanging on "/dev/root not found" or similar.
Mind you, I have Linux running on 3 other desktops here, one of which runs a web-server, ftp server, acts as a router and HTPC. I've been using Linux for about 5 years now and this is the roughest Linux experience I've had in at least 3 years.
Thanks for the reply,
I have successfully compiled the latest kernel from the Linus git tree:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git linux26
I used make oldconfig, holding down enter to accept all defaults.
I then made about 3 changes.
1. Change the CPU architecture to AMD Athlon 64 / Hammer from Generic.
2. Enable SATA (Prod) support as "built-in" rather than as a module.
3. Enabled ext3 journaling fs support. Believe it or not, this was NOT enabled before, and yes, my root fs is ext3. I also enabled it as built-in.
I also enabled a few SATA drivers as built-in where-as before they were listed as module.
I then ran:
And what do you know? It runs absolutely fine!
Unfortunately, it still hangs on resume from Suspend mode, but I can live with that as long as Hibernate works OK. (Didn't before).
Just for the record, the current kernel is now: 2.6.24-rc6
The kernel boots as normal, save for a few PCI warnings.
I just wonder whether it was the newer kernel or the changes I made that did the trick.
Thanks Len, that was a great idea to try the rc kernel. ;)
Thanks for testing, Dan.
As the upstream 2.6.24-rc6 kernel works, we're done here.
Re: distros not working on this box. I'm not familiar
with the (non-Intel:-) chipset, it might be that upstream
has a driver update for it the distros don't have yet.
I expect 2.6.24 will ship shortly, and you'll be able to
get it included with test releases of FC9 etc.