Bug#426714: intelfb refuses mode switching
Package: linux-image-2.6.18-4-686
Architecture: i386
Version: 2.6.18.dfsg.1-12etch2
intelfb fails to load on a laptop although there is no reason for this - my
desktop system loads the module just fine with a LCD display.
Notebook:
# lspci
00:02.0 VGA compatible controller: Intel Corporation 82852/855GM Integrated
Graphics Device (rev 02)
Desktop:
# lspci
00:02.0 VGA compatible controller: Intel Corporation 82865G Integrated
Graphics Controller (rev 02)
Notebook's dmesg output:
Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected an Intel 855 Chipset.
agpgart: Detected 892K stolen memory.
agpgart: AGP aperture is 128M @ 0xf0000000
intelfb: Framebuffer driver for Intel(R)
830M/845G/852GM/855GM/865G/915G/915GM/945G/945GM chipsets
intelfb: Version 0.9.4
ACPI: PCI Interrupt 0000:00:02.0[A] -> Link [LNKA] -> GSI 11 (level, low) ->
IRQ 11
intelfb: 00:02.0: Intel(R) 855GME, aperture size 128MB, stolen memory 892kB
intelfb: Non-CRT device is enabled ( LVDS port ). Disabling mode switching.
intelfb: Video mode must be programmed at boot time.
The module is loaded in /etc/initramfs-tools/modules on both machines with
these lines:
intel_agp
intelfb mode=1024x768-16@60
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