[SOLVED] i915: Xorg only detects 8MB RAM

[thorbenk]

I have tried almost everything, but I just can't get xvideo and direct rendering to work with the i810 driver using Xorg 6.8.99.15.

• Kernel: gentoo-sources-2.6.12-r6
• Xorg: xorg-x11-6.8.99.15
• Hardware: Samsung X20 XVM 1600 V

This is what I get:

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(WW) I810: No matching Device section for instance (BusID PCI:0:2:1) found
(WW) I810(0): Bad V_BIOS checksum
(WW) I810(0): /dev/agpgart is either not available, or no memory is available
(WW) I810(0): VideoRAM reduced to 7932 kByte (limited to available sysmem)
(WW) I810(0): Bad V_BIOS checksum

Looks like Xorg only recognizes 8MB RAM, but that is not enough for direct rendering etc. to be enabled

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(II) I810(0): 15440 kBytes additional video memory is required to
        enable tiling mode for DRI.
(II) I810(0): 3040 kBytes additional video memory is required to enable DRI.
(II) I810(0): Disabling DRI.

And what is this??

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(II) I810(0): I830CheckAvailableMemory: -545582944 kB available

This is what is relevant in the Character devices section in the kernel:

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<*> /dev/agpgart (AGP Support)
<*>   Intel 440LX/BX/GX, I8xx and E7x05 chipset support
<*> Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
<*>   Intel 830M, 845G, 852GM, 855GM, 865G (i915 driver)

And here DRI and Device section of my xorg.conf:

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Section "DRI"
  Mode 0666
EndSection

Section "Device"
  Identifier  "i915Chipset"
  Driver      "i810"
  VideoRam    131072
  Option      "NoAccel"       "false"
  Option      "DRI"           "true"
EndSection

Edited to add:
This is what dmesg says:

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Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected an Intel 915GM Chipset.
agpgart: Detected 7932K stolen memory.
agpgart: AGP aperture is 256M @ 0xc0000000
[drm] Initialized drm 1.0.0 20040925
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 11
PCI: setting IRQ 11 as level-triggered
ACPI: PCI Interrupt 0000:00:02.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11
[drm] Initialized i915 1.1.0 20040405 on minor 0: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller

Any ideas? I hate having a 1,6Ghz CPU and not being able to watch DVDs

[keyson]

Hi

Have you checked your bios setting?

It borrow's from your system memory

(II) I810(0): I830CheckAvailableMemory: -545582944 kB available

You seems to have 512Mb memory.

(WW) I810(0): VideoRAM reduced to 7932 kByte (limited to available sysmem)

Seeams to me that you have set the bios to 8MB video memory.

[thorbenk]

This problem has been solved.
For details, see here: http://gentoo-wiki.com/HARDWARE_Samsung_X20