Public bug reported:
nouveau kernel driver fails to detect display attached via long (10+ meters)
VGA cable (or via KVM device). Nothing shows up in dmesg (or in the X log) at
the default debugging level, when the display is connected via the long cable.
When a shorter VGA cable is used, the display is detected correctly.
The VGA cable is attached to a DP->VGA converter connected to the mini
display port of the computer.
In OSX, the display is detected (and used) on both cables correctly,
therefore the physical connection to the display in itself is not
responsible for the problem.
The NVIDIA Linux driver does detect the display on the long VGA cable,
but allows only lower than preferred resolution. The short cable works
correctly with the NVIDIA Linux driver.
xrandr shows after connecting the display via the long cable:
DP-1 disconnected (normal left inverted right x axis y axis)
I can not force the display on with:
xrandr --newmode "1024x768@70.1" 76.27 1024 1080 1192 1360 768 769
772 800 -HSync +Vsync
xrandr --addmode DP-1 1024x768@70.1
xrandr --output DP-1 --mode 1024x768@70.1
(this mode is valid for the display), I get:
xrandr: Configure crtc 1 failed
and in X.log:
[ 1140.552] (II) NOUVEAU(0): EDID vendor "APP", prod id 40137
[ 1140.552] (II) NOUVEAU(0): Printing DDC gathered Modelines:
[ 1140.552] (II) NOUVEAU(0): Modeline "1280x800"x0.0 72.50 1280 1328 1360
1440 800 803 809 823 -hsync -vsync (50.3 kHz)
[ 1140.786] (EE) NOUVEAU(0): failed to set mode: Invalid argumentresize called
1280 800
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-35.55-generic 3.2.34
Uname: Linux 3.2.0-35-generic x86_64
NonfreeKernelModules: wl
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,imgpng,vpswitch,snap,regex,mousepoll,gnomecompat,animation,move,workarounds,place,firepaint,resize,session,wall,ezoom,staticswitcher,fade,scale]
CompositorRunning: compiz
Date: Sat Jan 12 16:45:57 2013
DistUpgraded: 2012-06-15 08:35:37,791 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes,
GraphicsCard:
NVIDIA Corporation Device [10de:08a0] (rev a2) (prog-if 00 [VGA controller])
Subsystem: Apple Inc. Device [106b:00c2]
MachineType: Apple Inc. MacBookPro7,1
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-35-generic
root=UUID=d0e506c7-ffc8-4cea-90c7-c99701b096ba ro log_buf_len=1M
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to precise on 2012-06-15 (211 days ago)
dmi.bios.date: 06/01/10
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP71.88Z.0039.B0B.1006012305
dmi.board.name: Mac-F222BEC8
dmi.board.vendor: Apple Inc.
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F222BEC8
dmi.modalias:
dmi:bvnAppleInc.:bvrMBP71.88Z.0039.B0B.1006012305:bd06/01/10:svnAppleInc.:pnMacBookPro7,1:pvr1.0:rvnAppleInc.:rnMac-F222BEC8:rvr:cvnAppleInc.:ct10:cvrMac-F222BEC8:
dmi.product.name: MacBookPro7,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.7.12-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-0ubuntu0.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-0ubuntu0.2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.8
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:0.0.16+git20111201+b5534a1-1build2
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 precise ubuntu
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https://bugs.launchpad.net/bugs/1098907
Title:
nouveau kernel driver fails to detect display attached via long VGA
cable
Status in “xorg” package in Ubuntu:
New
Bug description:
nouveau kernel driver fails to detect display attached via long (10+ meters)
VGA cable (or via KVM device). Nothing shows up in dmesg (or in the X log) at
the default debugging level, when the display is connected via the long cable.
When a shorter VGA cable is used, the display is detected correctly.
The VGA cable is attached to a DP->VGA converter connected to the mini
display port of the computer.
In OSX, the display is detected (and used) on both cables correctly,
therefore the physical connection to the display in itself is not
responsible for the problem.
The NVIDIA Linux driver does detect the display on the long VGA cable,
but allows only lower than preferred resolution. The short cable works
correctly with the NVIDIA Linux driver.
xrandr shows after connecting the display via the long cable:
DP-1 disconnected (normal left inverted right x axis y axis)
I can not force the display on with:
xrandr --newmode "1024x768@70.1" 76.27 1024 1080 1192 1360 768 769
772 800 -HSync +Vsync
xrandr --addmode DP-1 1024x768@70.1
xrandr --output DP-1 --mode 1024x768@70.1
(this mode is valid for the display), I get:
xrandr: Configure crtc 1 failed
and in X.log:
[ 1140.552] (II) NOUVEAU(0): EDID vendor "APP", prod id 40137
[ 1140.552] (II) NOUVEAU(0): Printing DDC gathered Modelines:
[ 1140.552] (II) NOUVEAU(0): Modeline "1280x800"x0.0 72.50 1280 1328 1360
1440 800 803 809 823 -hsync -vsync (50.3 kHz)
[ 1140.786] (EE) NOUVEAU(0): failed to set mode: Invalid argumentresize
called 1280 800
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-35.55-generic 3.2.34
Uname: Linux 3.2.0-35-generic x86_64
NonfreeKernelModules: wl
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,imgpng,vpswitch,snap,regex,mousepoll,gnomecompat,animation,move,workarounds,place,firepaint,resize,session,wall,ezoom,staticswitcher,fade,scale]
CompositorRunning: compiz
Date: Sat Jan 12 16:45:57 2013
DistUpgraded: 2012-06-15 08:35:37,791 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes,
GraphicsCard:
NVIDIA Corporation Device [10de:08a0] (rev a2) (prog-if 00 [VGA controller])
Subsystem: Apple Inc. Device [106b:00c2]
MachineType: Apple Inc. MacBookPro7,1
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-35-generic
root=UUID=d0e506c7-ffc8-4cea-90c7-c99701b096ba ro log_buf_len=1M
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to precise on 2012-06-15 (211 days ago)
dmi.bios.date: 06/01/10
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP71.88Z.0039.B0B.1006012305
dmi.board.name: Mac-F222BEC8
dmi.board.vendor: Apple Inc.
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F222BEC8
dmi.modalias:
dmi:bvnAppleInc.:bvrMBP71.88Z.0039.B0B.1006012305:bd06/01/10:svnAppleInc.:pnMacBookPro7,1:pvr1.0:rvnAppleInc.:rnMac-F222BEC8:rvr:cvnAppleInc.:ct10:cvrMac-F222BEC8:
dmi.product.name: MacBookPro7,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.7.12-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-0ubuntu0.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-0ubuntu0.2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.8
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:0.0.16+git20111201+b5534a1-1build2
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