Compatibility with Kernel 2.6.38 about asus-switcheroo

[awilliam]

I've used the modules on 2.6.38, so I don't think there's any fundamental incompatibility. The i915_jprobe module not loading should not affect whether you have a vgaswitcheroo file or not. That should entirely come from the asus-switcheroo module loading and doing so before nouveau loads. Double check that nouveau is blacklisted and only getting registered after asus-switcheroo. For the i915-jprobe error, do you have acpi_lid_notifier_register in /proc/kallsyms?

[Nicias]

I just tested this, loading asus-switcheroo before any other modules. I get the same thing as above in dmesg, but still no vgaswitcheroo file.

[Nicias]

Also, I just checked for that line in the /proc/kallsyms:

grep acpi_lid_notifier_register kallsyms
ffffffff812f17a9 T acpi_lid_notifier_register
ffffffff81691770 r __ksymtab_acpi_lid_notifier_register
ffffffff816ab40e r __kstrtab_acpi_lid_notifier_register

That is without i915-jprobe being loaded.

[nstadigs]

I can second this issue
I have a fresh install of the latest ubuntu

[Nicias]

Perhaps you (awilliam) could post a working .config for 2.6.38?

[awilliam]

Works for me on stock Fedora 2.6.38. Can someone post a dmesg? My guess is nouveau isn't loading correctly from the initrd. I've found that blacklisting nouveau and loading it from an init script later often works more reliably.

[Nicias]

I'll post a dmesg when I get back to my laptop tonight. However, I think I posted the relevant parts. I'm not using an initrd, and I don't get that debug file, ever before the nvidia driver loads.

[Nicias]

here is my dmesg:

http://paste.pocoo.org/show/450885/

Sorry that I keep closing the issue by accident.

[awilliam]

I don't see nouveau loading, are you using the dummy_client option? In order to get the debugfs switcheroo file you need 2 clients and 1 handler. i915 should be registering a handler. asus/byo-switcheroo registers a handler. The nouveau driver typically registers the other client or asus/byo-switcher if you use the dummy_client option. If asus-switcheroo were using the dummy client option, I would expect to see "vga_switcheroo: enabled" in your dmesg.

[Nicias]

I'm using the dummy client option. The module is loaded with dummy_client=1.

[awilliam]

Let's make sure the dummy_client option is actually getting set. Check

cat /sys/module/asus_switcheroo/parameters/dummy_client

It should return Y or N.

[Nicias]

It returns Y

[awilliam]

Good. If you switch to byo-switcheroo with dummy_client=1 model=AsusUL30VT it will be equivalent to asus-switcheroo, but print whether the registration of the client succeeded. Your config does include CONFIG_VGA_SWITCHEROO=y, right?

[Nicias]

Ahhh, that fixed it. I had that turned off since I thought it would conflict with theses modules. Now it works! Thanks.