http://bugzilla.kernel.org/show_bug.cgi?id=13620
Summary: acpi_enforce_resources broken - conflicting i2c module
loaded on some EeePCs
Product: ACPI
Version: 2.5
Kernel Version: Debian 2.6.30-1
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Config-Other
AssignedTo: acpi_config-ot...@kernel-bugs.osdl.org
ReportedBy: alan-jenk...@tuffmail.co.uk
Regression: Yes
Created an attachment (id=22090)
--> (http://bugzilla.kernel.org/attachment.cgi?id=22090)
2.6.30 dmesg: i2c_i801 loads, causes 15 second delay in eeepc-laptop
This was raised when eeepc-laptop was reported to cause ~15 second delays on
bootup. We saw it before in Bug 12376. The cause is that i2c_i801 binds to
hardware which is also driven by the ACPI BIOS. Blacklisting i2c_i801 fixes
it.
In debian 2.6.29-something, "acpi_enforce_resources=strict" fixes the problem
by reserving the resources used by ACPI, so i2c_i801 can't bind.
2.6.30 should fix it because "strict" is now the default. But it doesn't work;
i2c_i801 is loaded even if the "strict" boot option is set. This is a
regression.
References:
<http://lists.alioth.debian.org/pipermail/debian-eeepc-devel/2009-June/002316.html>
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