but you can set the sync modes before X startup or after - so saying it is UBUNTU's error is wrong. it is Ubuntu's correctness to use the better frequencies maybe

VERY NORMAL.

I have used vga extended cables or switchbox, but not with that exact card - and using them reduces quality

video stability IS very picky / requires a ton of fidelity and bandwidth. thus network cables can't carry video. stability also depends on the monitor's electronics / abilities. (btw I know nothing of LED monitor pinouts / signals)


Takaya Yamashita wrote:
Package: xserver-xorg-video-intel
Version: 2:2.14.0-4
Severity: normal

My external screen shakes when I connect it over VGA.
The machine is a Thinkpad T410s with an i915 Intel controller.
Of course, Windows works fine VGA output.
Is is not individual problem, the other displays are similar, too.
This problem seems to happen in Ubuntu[1].

[1] External monitor using VGA has sync issues with KMS
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/671921

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 
'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.38-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=ja_JP.utf8, LC_CTYPE=ja_JP.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages xserver-xorg-video-intel depends on:
ii  libc6                      2.11.2-13     Embedded GNU C Library: Shared lib
ii  libdrm-intel1              2.4.23-3      Userspace interface to intel-speci
ii  libdrm2                    2.4.23-3      Userspace interface to kernel DRM
ii  libpciaccess0              0.12.1-1      Generic PCI access library for X
ii  libudev0                   166-1         libudev shared library
ii  libx11-6                   2:1.4.1-5     X11 client-side library
ii  libx11-xcb1                2:1.4.1-5     Xlib/XCB interface library
ii  libxcb-aux0                0.3.6-1       utility libraries for X C Binding
ii  libxcb-dri2-0              1.7-2         X C Binding, dri2 extension
ii  libxcb1                    1.7-2         X C Binding
ii  libxext6                   2:1.2.0-2     X11 miscellaneous extension librar
ii  libxfixes3                 1:4.0.5-1     X11 miscellaneous 'fixes' extensio
ii  libxv1                     2:1.0.6-1     X11 Video extension library
ii  libxvmc1                   2:1.0.6-1     X11 Video extension library
ii  xserver-xorg-core [xorg-vi 2:1.9.4.901-1 Xorg X server - core server

xserver-xorg-video-intel recommends no packages.

xserver-xorg-video-intel suggests no packages.

-- no debconf information




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