[Bug 11259] oops when closing laptop lid unless CONFIG_ACPI_VIDEO=n or CONFIG_SMP=n -- HP Compaq 6720s

[bugzilla-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=11259


Adam Williamson <awill...@redhat.com> changed:

           What    |Removed                     |Added
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                 CC|                            |awill...@redhat.com




--- Comment #34 from Adam Williamson <awill...@redhat.com>  2009-09-24 17:48:40 
---
The fix which was applied for this issue has its own problem. It just assumes
the workaround should be applied to any Intel video adapter:

    for_each_pci_dev(dev) {
        if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
            continue;
        if (dev->vendor != PCI_VENDOR_ID_INTEL)
            continue;
        pci_read_config_dword(dev, 0xfc, &address);
        if (!address)
            continue;
        return 1;
    }

However, this also catches GMA 500 adapters, which don't use the Intel driver.
(If you're lucky), they use the psb driver, which doesn't behave like intel and
shouldn't have this 'workaround' applied. When it is applied, it causes psb not
to work right unless the workaround 'IgnoreACPI' X config option is set:

http://swiss.ubuntuforums.org/showpost.php?p=7781689&postcount=17

so this check should be refined not to catch GMA 500 (and, possibly, Moorestown
in future, depending on how Moorestown is handled) adapters, I think. I'll see
if I can provide a refinement to do this.

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