Public bug reported:
The first mode change always works, but subsequent mode changes keep
failing. Running xrandr --output DVI-I-2 --mode 1600x1200 to go back to
the native resolution or any other supported resolution fails with:
xrandr: Configure crtc 0 failed
X Error of failed request: BadValue (integer parameter out of range for
operation)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 21 (RRSetCrtcConfig)
Value in failed request: 0x0
Serial number of failed request: 38
Current serial number in output stream: 38
Mode changes from SDL 1.2 and 2.0 also fail, and a SDL 1.2 program is
killed by the error when returning from full screen.
These are changes for modes on my first monitor, which I use all the
time. I think the bug is happening because the second monitor provides
invalid EDID while turned off via the switch on the back. Everything
works if the switch on the back of the second monitor is turned on or if
an /etc/X11/xorg.conf file with sufficient options in the screen section
is in place. Ubuntu upgrades rename the xorg.conf file and deactivate
it, and I was running into the bug because of that. I'm not yet sure
which option lines in the screen section are required. I'm attaching my
normal xorg.conf file, which makes things work. I'm calling this a bug
because the second monitor shouldn't break mode changes on the first
monitor.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: nvidia-340 340.101-0ubuntu0.16.10.1
ProcVersionSignature: Ubuntu 4.8.0-41.44-generic 4.8.17
Uname: Linux 4.8.0-41-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri Mar 10 15:12:33 2017
SourcePackage: nvidia-graphics-drivers-340
UpgradeStatus: Upgraded to yakkety on 2016-10-13 (148 days ago)
modified.conffile..etc.modprobe.d.nvidia-340_hybrid.conf: [deleted]
** Affects: nvidia-graphics-drivers-340 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug yakkety
** Attachment added: "This xorg.conf file makes the problem go away"
https://bugs.launchpad.net/bugs/1671920/+attachment/4835491/+files/xorg.conf
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to nvidia-graphics-drivers-340 in Ubuntu.
https://bugs.launchpad.net/bugs/1671920
Title:
Mode changes fail unless some xorg.conf screen options are set
Status in nvidia-graphics-drivers-340 package in Ubuntu:
New
Bug description:
The first mode change always works, but subsequent mode changes keep
failing. Running xrandr --output DVI-I-2 --mode 1600x1200 to go back
to the native resolution or any other supported resolution fails with:
xrandr: Configure crtc 0 failed
X Error of failed request: BadValue (integer parameter out of range for
operation)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 21 (RRSetCrtcConfig)
Value in failed request: 0x0
Serial number of failed request: 38
Current serial number in output stream: 38
Mode changes from SDL 1.2 and 2.0 also fail, and a SDL 1.2 program is
killed by the error when returning from full screen.
These are changes for modes on my first monitor, which I use all the
time. I think the bug is happening because the second monitor provides
invalid EDID while turned off via the switch on the back. Everything
works if the switch on the back of the second monitor is turned on or
if an /etc/X11/xorg.conf file with sufficient options in the screen
section is in place. Ubuntu upgrades rename the xorg.conf file and
deactivate it, and I was running into the bug because of that. I'm not
yet sure which option lines in the screen section are required. I'm
attaching my normal xorg.conf file, which makes things work. I'm
calling this a bug because the second monitor shouldn't break mode
changes on the first monitor.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: nvidia-340 340.101-0ubuntu0.16.10.1
ProcVersionSignature: Ubuntu 4.8.0-41.44-generic 4.8.17
Uname: Linux 4.8.0-41-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri Mar 10 15:12:33 2017
SourcePackage: nvidia-graphics-drivers-340
UpgradeStatus: Upgraded to yakkety on 2016-10-13 (148 days ago)
modified.conffile..etc.modprobe.d.nvidia-340_hybrid.conf: [deleted]
To manage notifications about this bug go to:
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