Hello, 

I have installed kernel 2.6.33-rc8, and here's the relevant part of my
.config:

# Input device support
#
CONFIG_INPUT=y
# CONFIG_INPUT_FF_MEMLESS is not set
CONFIG_INPUT_POLLDEV=m
#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
# CONFIG_KEYBOARD_ADP5588 is not set
CONFIG_KEYBOARD_ATKBD=y

CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_LIFEBOOK=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
# CONFIG_MOUSE_PS2_ELANTECH is not set
# CONFIG_MOUSE_PS2_SENTELIC is not set
CONFIG_MOUSE_PS2_TOUCHKIT=y
CONFIG_MOUSE_SERIAL=m
CONFIG_MOUSE_APPLETOUCH=m
CONFIG_MOUSE_BCM5974=m
# CONFIG_MOUSE_VSXXXAA is not set
# CONFIG_MOUSE_SYNAPTICS_I2C is not set

....

#
# I2C Hardware Bus support
#

#
# PC SMBus host controller drivers
#
CONFIG_I2C_I801=m
CONFIG_I2C_ISCH=m

#
# Graphics support
#
CONFIG_AGP=y
# CONFIG_AGP_AMD64 is not set
CONFIG_AGP_INTEL=y
CONFIG_VGA_ARB=y
CONFIG_DRM=y
CONFIG_DRM_KMS_HELPER=m

CONFIG_DRM_I830=m
CONFIG_DRM_I915=m
CONFIG_DRM_I915_KMS=y

CONFIG_VIDEO_OUTPUT_CONTROL=m
CONFIG_FB=y
CONFIG_FIRMWARE_EDID=y
CONFIG_FB_DDC=m
CONFIG_FB_BOOT_VESA_SUPPORT=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
# CONFIG_FB_SYS_FILLRECT is not set
# CONFIG_FB_SYS_COPYAREA is not set
# CONFIG_FB_SYS_IMAGEBLIT is not set
# CONFIG_FB_FOREIGN_ENDIAN is not set
# CONFIG_FB_SYS_FOPS is not set
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
CONFIG_FB_MODE_HELPERS=y
# CONFIG_FB_TILEBLITTING is not set

#
# Frame buffer hardware drivers
#

CONFIG_FB_VESA=y
CONFIG_FB_INTEL=m
CONFIG_FB_INTEL_DEBUG=y
CONFIG_FB_INTEL_I2C=y

CONFIG_BACKLIGHT_CLASS_DEVICE=m
CONFIG_BACKLIGHT_GENERIC=m

#
# Display device support
#
# CONFIG_DISPLAY_SUPPORT is not set

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY is not set
# CONFIG_FRAMEBUFFER_CONSOLE_ROTATION is not set
# CONFIG_FONTS is not set
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_LOGO=y
# CONFIG_LOGO_LINUX_MONO is not set
# CONFIG_LOGO_LINUX_VGA16 is not set
CONFIG_LOGO_LINUX_CLUT224=y
......

#
# Firmware Drivers
#
# CONFIG_EDD is not set
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_DELL_RBU=m
CONFIG_DCDBAS=m
CONFIG_DMIID=y

===========================================================================================
I am running x without xorg.conf. When I do startx here's the output:

xauth:  creating new authority file /root/.serverauth.4020


X.Org X Server 1.6.5
Release Date: 2009-10-11
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.31-gentoo-r6 x86_64 
Current Operating System: Linux localhost 2.6.33-rc8 #4 SMP Wed Feb 24 04:24:06 
AST 2010 x86_64
Build Date: 22 February 2010  07:09:57PM
 
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Wed Feb 24 06:02:16 2010
(==) Using default built-in configuration (39 lines)
(EE) Failed to load module "i810" (module does not exist, 0)

Fatal server error:
Cannot run in framebuffer mode. Please specify busIDs        for all 
framebuffer devices


Please consult the The X.Org Foundation support 
         at http://wiki.x.org
 for help. 
Please also check the log file at "/var/log/Xorg.0.log" for additional 
information.

giving up.
xinit:  No such file or directory (errno 2):  unable to connect to X server
xinit:  No such process (errno 3):  unexpected signal 2.

==============================================================

And my Xorg log:

(==) AIGLX enabled
(II) Loading extension GLX
(II) LoadModule: "record"
(II) Loading /usr/lib64/xorg/modules/extensions//librecord.so
(II) Module record: vendor="X.Org Foundation"
        compiled for 1.6.5, module version = 1.13.0
        Module class: X.Org Server Extension
        ABI class: X.Org Server Extension, version 2.0
(II) Loading extension RECORD
(II) LoadModule: "dri"
(II) Loading /usr/lib64/xorg/modules/extensions//libdri.so
(II) Module dri: vendor="X.Org Foundation"
        compiled for 1.6.5, module version = 1.0.0
        ABI class: X.Org Server Extension, version 2.0
(II) Loading extension XFree86-DRI
(II) LoadModule: "dri2"
(II) Loading /usr/lib64/xorg/modules/extensions//libdri2.so
(II) Module dri2: vendor="X.Org Foundation"
        compiled for 1.6.5, module version = 1.1.0
        ABI class: X.Org Server Extension, version 2.0
(II) Loading extension DRI2
(II) LoadModule: "intel"
(II) Loading /usr/lib64/xorg/modules/drivers//intel_drv.so
(II) Module intel: vendor="X.Org Foundation"
        compiled for 1.6.5, module version = 2.9.1
        Module class: X.Org Video Driver
        ABI class: X.Org Video Driver, version 5.0
(II) LoadModule: "i810"
(WW) Warning, couldn't open module i810
(II) UnloadModule: "i810"
(EE) Failed to load module "i810" (module does not exist, 0)
(II) LoadModule: "vesa"
(II) Loading /usr/lib64/xorg/modules/drivers//vesa_drv.so
(II) Module vesa: vendor="X.Org Foundation"
        compiled for 1.6.5, module version = 2.3.0
        Module class: X.Org Video Driver
        ABI class: X.Org Video Driver, version 5.0
(II) LoadModule: "fbdev"
(II) Loading /usr/lib64/xorg/modules/drivers//fbdev_drv.so
(II) Module fbdev: vendor="X.Org Foundation"
        compiled for 1.6.5, module version = 0.4.1
        ABI class: X.Org Video Driver, version 5.0
(II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
        i810-dc100, i810e, i815, i830M, 845G, 852GM/855GM, 865G, 915G,
        E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G,
        965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45,
        4 Series, G45/G43, Q45/Q43, G41, B43, Clarkdale, Arrandale
(II) VESA: driver for VESA chipsets: vesa
(II) FBDEV: driver for framebuffer: fbdev
(II) Primary Device is: PCI 0...@00:02:0
(WW) Falling back to old probe method for vesa
(WW) Falling back to old probe method for fbdev
(II) Loading sub module "fbdevhw"
(II) LoadModule: "fbdevhw"
(II) Loading /usr/lib64/xorg/modules/linux//libfbdevhw.so
(II) Module fbdevhw: vendor="X.Org Foundation"
        compiled for 1.6.5, module version = 0.0.2
        ABI class: X.Org Video Driver, version 5.0
(II) FBDEV(1): using default device

Fatal server error:
Cannot run in framebuffer mode. Please specify busIDs        for all 
framebuffer devices


Please consult the The X.Org Foundation support 
         at http://wiki.x.org
 for help. 
Please also check the log file at "/var/log/Xorg.0.log" for additional 
information.

=====================================================================

The last 50 lines of dmesg:

hub 2-0:1.0: USB hub found
hub 2-0:1.0: 3 ports detected
tg3.c:v3.106 (January 12, 2010)
tg3 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
tg3 0000:02:00.0: setting latency timer to 64
tg3 mdio bus: probed
eth0: Tigon3 [partno(BCM57780) rev 57780001] (PCI Express) MAC address 
00:26:2d:76:07:ca
eth0: attached PHY driver [Broadcom BCM57780] (mii_bus:phy_addr=200:01)
eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1]
eth0: dma_rwctrl[76180000] dma_mask[64-bit]
i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
i915 0000:00:02.0: setting latency timer to 64
[drm] set up 127M of stolen space
ath9k 0000:04:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
ath9k 0000:04:00.0: setting latency timer to 64
usb 2-1: new high speed USB device using ehci_hcd and address 2
hub 2-1:1.0: USB hub found
hub 2-1:1.0: 8 ports detected
ath: EEPROM regdomain: 0x65
ath: EEPROM indicates we should expect a direct regpair map
ath: Country alpha2 being used: 00
ath: Regpair used: 0x65
usb 1-1: new high speed USB device using ehci_hcd and address 2
phy0: Selected rate control algorithm 'ath9k_rate_control'
Registered led device: ath9k-phy0::radio
Registered led device: ath9k-phy0::assoc
Registered led device: ath9k-phy0::tx
Registered led device: ath9k-phy0::rx
phy0: Atheros AR9280 Rev:2 mem=0xffffc900100a0000, irq=17
hub 1-1:1.0: USB hub found
hub 1-1:1.0: 6 ports detected
usb 2-1.5: new high speed USB device using ehci_hcd and address 3
Console: switching to colour frame buffer device 170x48
fb0: inteldrmfb frame buffer device
registered panic notifier
acpi device:06: registered as cooling_device4
input: Video Bus as 
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:01/input/input5
ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
HDA Intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22
HDA Intel 0000:00:1b.0: setting latency timer to 64
hda_codec: ALC272: BIOS auto-probing.
EXT4-fs (sda6): mounted filesystem with ordered data mode
EXT4-fs (sda7): mounted filesystem with ordered data mode
tg3: eth0: Link is down.
tg3: eth0: Link is up at 100 Mbps, full duplex.
tg3: eth0: Flow control is on for TX and on for RX.
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
eth0: no IPv6 routers present

======================================================================

The fb started automatically, as I was not passing any parameters to the
kernel. Normally I pass vga=791. Beside this issue, the IO is very slow.
Opening, saving or scrolling thought a file suspends for some time (ex,
tab completion in the console). I don't think this is related. 

Since the problem still persist, I think I am left with one option which
is using ~arch. But where's the documentation for this ? 






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