Re: [gentoo-user] Updates = slow firefox

[Grant <emailgrant@gmail.com>]

>>> Could this be the problem?
>>>
>>> # grep ^\(EE /var/log/Xorg.0.log
>>> (EE) Failed to load module "vesa" (module does not exist, 0)
>>> (EE) Failed to load module "fbdev" (module does not exist, 0)
>>> (EE) intel(0): [drm] Failed to open DRM device for : No such file or
>>> directory
>>> (EE) intel(0): Failed to become DRM master.
>>> (EE) intel(0): Failed to initialize kernel memory manager
>>
>> The first two errors are fine; Xorg defaults to trying vesa and fbdev as
>> display drivers and you just don't have them.
>>
>> The last three are your problem.  The intel video driver is unable to
>> properly access the DRM subsystem, which will definitely cause X to slow
>> to a crawl.
>>
>> The most likely cause of your errors is that the intel AGP driver (i810
>> or i915, depending on your hardware) isn't getting loaded.  If that's
>> the case, you should see an error such as:
>>
>> [drm] failed to load kernel module "i915"
>>
>> in Xorg.0.log just before the ones from intel.  If the modules are being
>> loaded, you'll likely see some other errors around that same area.  The
>> aren't tagged with (EE), unfortunately; try:
>>
>> # grep -5 'Failed to open DRM' Xorg.0.log
>>
>> You can also check your dmesg output to see if the devices are being
>> initialized properly:
>>
>> platypus log # dmesg | grep agp
>> Linux agpgart interface v0.103
>> agpgart-intel 0000:00:00.0: Intel 965GM Chipset
>> agpgart-intel 0000:00:00.0: detected 7676K stolen memory
>> agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xe0000000
>>
>> platypus log # dmesg | grep drm
>> [drm] Initialized drm 1.1.0 20060810
>> [drm] set up 7M of stolen space
>> [drm] initialized overlay support
>> fb0: inteldrmfb frame buffer device
>> [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
>>
>> If everything's working, you should have the following devices that the
>> Xorg driver needs:
>>
>> platypus log # ls -l /dev/dri
>> total 0
>> crw-rw---- 1 root video 226,  0 Apr 20 13:11 card0
>> crw-rw---- 1 root video 226, 64 Apr 20 13:11 controlD64
>
> Ah, thank you so much.  I needed to enable CONFIG_DRM_I915 in the kernel.
>
> - Grant

Strangely, now my laptop's brightness adjustment doesn't work via the
keyboard shortcuts.  Any ideas on that?

- Grant