Public bug reported:
I have a macbook pro (5.5 I think) and since 10.04 it has been
impossible to set external video modes at a higher resolution than
640*480 which is rather annoying and makes using the laptop in linux for
presentations a big problem.
Anyway I have tried all the usual stuff - trying to force the resolution
in xorg.conf, tryng nvidia-settings and trying the nvidia xorg.conf
option"useEDID" "FALSE" but nowt seems to work.
I am convinced this did used to work (but I can't remember how) - I
previously had a separate problem with the screen turning off when
mplayer started in magicpoint that could not have occurred at such a
limited resolution [I never did get to the bottom of this]. IIRC the
useedid false option in xorg.conf used to allow you to set any
resolution but no longer.
This seems to be a widespread problem for this hardware (which works
fine in macosx)
I wouldn't know if this is X, nvidia, nvidia-settings or something else
that is at fault.
lsb_release -rd
Description: Ubuntu 11.10
Release: 11.10
cat /proc/version_signature
Ubuntu 3.0.0-14.23-generic 3.0.9
02:00.0 VGA compatible controller [0300]: nVidia Corporation C79 [GeForce
9400M] [10de:0863] (rev b1) (prog-if 00 [VGA controller])
Subsystem: Apple Computer Inc. Device [106b:00b9]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 21
Region 0: Memory at 92000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at 80000000 (64-bit, prefetchable) [size=256M]
Region 3: Memory at 90000000 (64-bit, prefetchable) [size=32M]
Region 5: I/O ports at 1000 [size=128]
[virtual] Expansion ROM at 93000000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: nvidia
Kernel modules: nvidia_current, nouveau, nvidiafb
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/908937
Title:
nividia / external monitor / macbook pro
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