Duncan posted on Mon, 25 Apr 2011 03:34:38 +0000 as excerpted:
> I'll do a followup with the netbook's glxinfo if I remember, but the
> above should give you some pointers to investigate, meanwhile.
OK, on the netbook...
lspc reports Intel 945GME
The xorg log (Xorg.0.log) first reports "Driver for Intel Integrated
Graphics Chipsets: i810", THEN reports the Intel driver detecting chipset
945GME (as lspci listed), BUT THEN the Intel driver DRI2 driver is
reported as the i915.
Talking about the xorg log... check it too. If you're running hardware
OpenGL, it'll report something like this (FWIW, xorg-server 1.10.1):
LoadModule: "dri"
Loading /usr/lib/xorg/modules/extensions/libdri.so
Module dri: vendor="X.Org Foundation"
compiled for 1.10.1, module version = 1.0.0
ABI class: X.org Server Extension, version 5.0
Loading extension XFree86-DRI
LoadModule: "dri2"
Loading /usr/lib/xorg/modules/extensions/libdri2.so
Module dri2: vendor="X.Org Foundation"
compiled for 1.10.1, module version = 1.2.0
ABI class: X.Org Server Extension, version 5.0
Loading extension DRI2
Then later...
drmOpenDevice: node name is /dev/dri/card0
... followed by open result 8, (OK), another open, drmOpenMinor, busID,
etc.
Then later
intel(0): [DRI2] Setup complete
intel(0): [DRI2] DRI driver: i915
later...
intel(0): direct rendering: DRI2 Enabled
later...
GLX: Initialized DRI2 GL provider for screen 0
If instead it's saying DRI disabled, or doesn't mention it, you're
software-fallback rendered, for sure, as it's straight from the log.
FWIW, here's those lines as mentioned up-thread from the netbooks glxinfo:
OpenGL vendor string: Tungsten Graphics, Inc
OpenGL renderer string: Mesa DRI Intel(R) 945GME x86/MMX/SSE2
Kernel config:
Here I do a custom config, building everything I need directly into the
kernel, so I can disable module loading. It's easier that way as I don't
have to ensure that the modules subdirs stay in sync with the kernel.
For graphics, you'll want and/or I have:
DRM/DRI (CONFIG_DRM)
Intel 8xx/9xx/63x/64x/HD Graphics (CONFIG_DRM_I915)
I have modesetting on by default (CONFIG_DRM_I915_KMS)
Support for frame buffer devices (CONFIG_FB)
Inside that option:
Enable Video Mode Handling Helpers (CONFIG_FB_MODE_HELPERS)
(may not be necessary but can help with EDID detection and doesn't hurt)
Enable Tile Blitting Support (CONFIG_FB_TILEBLITTING)
**DO**NOT** enable the Intel framebuffer device options here as they
interfere with KMS.
Back out under graphics again, go into Console display driver support:
Framebuffer Console support (CONFIG_FRAMEBUFFER_CONSOLE)
You want that for KMS.
It's recommended to enable VGA text console (CONFIG_VGA_CONSOLE) as well,
for a fallback in case the kms drivers fail for some reason, or if you
wish to use UMS. (In the removable graphics card case, VGA text console
is also a backup in case you switch to a different card, but as Intel
graphics are normally integrated, it's not like that's a real option. But
it's still worthwhile in case there's a problem with the KMS framebuffer
or for trying UMS.)
Back out at the main graphics menu again, I have VGA Arbitration off as
it's only useful with multiple graphics cards, lowlevel video output
switch controls is on to support the key that controls that on my netbook,
and backlight and LCD device support is enabled, with both lowlevel LCD
and backlight controls enabled inside, but no specific drivers, as that's
what my hardware takes.
More interesting is the /dev/agpgart (AGP Support) option, with the Intel
chipset option checked inside it. My system's PCIE, so I'm not sure
that's actually necessary, but it's enabled and X including OpenGL works.
Maybe I'll experiment with it at some point, but that point isn't now.
And if you do still have AGP, and the BIOS has the fastwrite option, make
sure it's off. While it works on some systems, it's unsupported and the
xorg folks consider it unsupportable, because it's so crazy-buggy on so
many systems. Similarly, any fast-write options you might have in your
xorg.conf. Ensure they're off.
FWIW, on the netbook the only bit of xorg.conf config I have here is the
synaptics touchpad config file located in /etc/X11/xorg.conf.d/ . The
rest of the X config is entirely internal xorg defaults and auto-
detection. (The main system is a bit more complex as it has dual
monitors, and an xorg config that sets orientation, etc. But it too is
way smaller than it used to be.)
--
Duncan - List replies preferred. No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master." Richard Stallman
