It's actually not as simple as that; resolutions are not just pluggable
numbers, but are actually calculated from 'modelines' which describe the
physical CRT or LCD drawing behaviors and refresh cycle rates which are
fairly specific to a given piece of hardware.
So, you can't take a given 1280x800 modeline for a Sony CRT monitor and
reuse it unchanged on a BENQ LCD flatscreen or a Fujitsu laptop; it's
likely this would just result in a scrambled screen most of the time.
The only modelines which are *guaranteed* to work on any monitor are the
ones specified by the VESA standard. Those are the modelines
corresponding to 1024x768, 800x600, and 640x480 - the "poor resolution
options" that you're being presented with. Ideally VESA would put out
newer standards, however even if they did that wouldn't solve it for all
the hw already out there.
One idea we've been pursuing to better address the case of EDID failures
is to allow for saving and loading EDID blobs into the kernel. Then,
you could either generate an EDID yourself through some sort of tool
(e.g. perhaps deriving it from your monitor's setup cd), or save it off
the monitor (or get it from someone with the same monitor), and then the
system can load it at boot. This is already adequately covered by
another bug report and the work is in progress (but no ETA on when it'll
be available in the distro.)
** Changed in: gnome-control-center (Ubuntu)
Status: Expired => Won't Fix
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https://bugs.launchpad.net/bugs/769366
Title:
Monitor prefs: poor resolution options when EDID fails
Status in “gnome-control-center” package in Ubuntu:
Won't Fix
Bug description:
Binary package hint: gnome-control-center
If EDID/DDC fails, the resolution options are too restrictive; an
exhaustive list of resolutions should be available.
Use case: I run my third monitor through a DisplayPort-->DVI adapter,
so no EDID information is returned. I cannot find any way to set the
correct resolution short of generating an xorg.conf.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: fglrx
Architecture: i386
CompizPlugins:
[core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
Date: Fri Apr 22 23:42:38 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
virtualbox-ose, 4.0.4, 2.6.38-8-generic-pae, i686: installed
fglrx, 8.840, 2.6.38-8-generic-pae, i686: installed
GraphicsCard:
ATI Technologies Inc Cypress [Radeon HD 5800 Series] [1002:6899] (prog-if 00
[VGA controller])
Subsystem: Hightech Information System Ltd. Device [1787:2290]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110413)
JockeyStatus: xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver
(Proprietary, Enabled, In use)
MachineType: Gigabyte Technology Co., Ltd. GA-890GPA-UD3H
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic-pae
root=UUID=7bd4798d-7a99-4476-820d-843bf0d1ced4 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xserver-xorg-video-ati
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/23/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: FD
dmi.board.name: GA-890GPA-UD3H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias:
dmi:bvnAwardSoftwareInternational,Inc.:bvrFD:bd07/23/2010:svnGigabyteTechnologyCo.,Ltd.:pnGA-890GPA-UD3H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-890GPA-UD3H:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-890GPA-UD3H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.4+bzr20110411-0ubuntu1
version.fglrx-installer: fglrx-installer N/A
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu1
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:0.0.16+git20110107+b795ca6e-0ubuntu7
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