I'm having exactly the same issue, in a HP ProBook 6460b laptop, with Intel HD 3000 integrated graphics.
Here is my xorg log where is the error: [ 6447.678] (II) AIGLX: Resuming AIGLX clients after VT switch [ 6447.678] (II) intel(0): switch to mode 1600x900 on crtc 3 (pipe 0) [ 6447.692] (II) intel(0): EDID vendor "LGD", prod id 596 [ 6447.692] (II) intel(0): Printing DDC gathered Modelines: [ 6447.692] (II) intel(0): Modeline "1600x900"x0.0 107.80 1600 1648 1680 1920 900 903 908 936 +hsync -vsync (56.1 kHz eP) [ 6447.916] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found [ 6449.981] (II) config/udev: Adding input device DELL Laser Mouse (/dev/input/event4) [ 6449.981] (**) DELL Laser Mouse: Applying InputClass "evdev pointer catchall" [ 6449.981] (II) Using input driver 'evdev' for 'DELL Laser Mouse' [ 6449.981] (**) DELL Laser Mouse: always reports core events [ 6449.981] (**) evdev: DELL Laser Mouse: Device: "/dev/input/event4" [ 6449.981] (--) evdev: DELL Laser Mouse: Vendor 0x461 Product 0x4d51 [ 6449.982] (--) evdev: DELL Laser Mouse: Found 9 mouse buttons [ 6449.982] (--) evdev: DELL Laser Mouse: Found scroll wheel(s) [ 6449.982] (--) evdev: DELL Laser Mouse: Found relative axes [ 6449.982] (--) evdev: DELL Laser Mouse: Found x and y relative axes [ 6449.982] (II) evdev: DELL Laser Mouse: Configuring as mouse [ 6449.982] (II) evdev: DELL Laser Mouse: Adding scrollwheel support [ 6449.982] (**) evdev: DELL Laser Mouse: YAxisMapping: buttons 4 and 5 [ 6449.982] (**) evdev: DELL Laser Mouse: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200 [ 6449.982] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5:1.0/input/input17/event4" [ 6449.982] (II) XINPUT: Adding extended input device "DELL Laser Mouse" (type: MOUSE, id 9) [ 6449.982] (II) evdev: DELL Laser Mouse: initialized for relative axes. [ 6449.982] (**) DELL Laser Mouse: (accel) keeping acceleration scheme 1 [ 6449.982] (**) DELL Laser Mouse: (accel) acceleration profile 0 [ 6449.982] (**) DELL Laser Mouse: (accel) acceleration factor: 2.000 [ 6449.982] (**) DELL Laser Mouse: (accel) acceleration threshold: 4 [ 6449.982] (II) config/udev: Adding input device DELL Laser Mouse (/dev/input/mouse0) [ 6449.982] (II) No input driver specified, ignoring this device. [ 6449.982] (II) This device may have been added with another device file. [ 6654.470] (II) intel(0): EDID vendor "LGD", prod id 596 [ 6654.470] (II) intel(0): Printing DDC gathered Modelines: [ 6654.470] (II) intel(0): Modeline "1600x900"x0.0 107.80 1600 1648 1680 1920 900 903 908 936 +hsync -vsync (56.1 kHz eP) [ 6654.946] (II) intel(0): switch to mode 1600x900 on crtc 3 (pipe 0) [ 6654.978] (II) intel(0): switch to mode 1920x1080 on crtc 5 (pipe 1) [ 6655.169] (II) intel(0): switch to mode 1600x900 on crtc 3 (pipe 0) (EE) [mi] EQ overflowing. Additional events will be discarded until existing events are processed. (EE) (EE) Backtrace: (EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7f483ed13476] (EE) 1: /usr/bin/X (mieqEnqueue+0x26b) [0x7f483ecf478b] (EE) 2: /usr/bin/X (0x7f483eb63000+0x6d472) [0x7f483ebd0472] (EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f4838ec6000+0x5f44) [0x7f4838ecbf44] (EE) 4: /usr/bin/X (0x7f483eb63000+0x96927) [0x7f483ebf9927] (EE) 5: /usr/bin/X (0x7f483eb63000+0xc0328) [0x7f483ec23328] (EE) 6: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f483dc66000+0xfbd0) [0x7f483dc75bd0] (EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7f483c983747] (EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7f483da5e338] (EE) 9: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f483b405000+0x39010) [0x7f483b43e010] (EE) 10: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f483b405000+0x3a1f7) [0x7f483b43f1f7] (EE) 11: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f483b405000+0x60d51) [0x7f483b465d51] (EE) 12: /usr/bin/X (BlockHandler+0x44) [0x7f483ebbfb94] (EE) 13: /usr/bin/X (WaitForSomething+0x114) [0x7f483ed107f4] (EE) 14: /usr/bin/X (0x7f483eb63000+0x58811) [0x7f483ebbb811] (EE) 15: /usr/bin/X (0x7f483eb63000+0x4757a) [0x7f483ebaa57a] (EE) 16: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7f483c8b3ea5] (EE) 17: /usr/bin/X (0x7f483eb63000+0x478c1) [0x7f483ebaa8c1] (EE) (EE) [mi] These backtraces from mieqEnqueue may point to a culprit higher up the stack. (EE) [mi] mieq is *NOT* the cause. It is a victim. (EE) [mi] EQ overflow continuing. 100 events have been dropped. (EE) (EE) Backtrace: (EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7f483ed13476] (EE) 1: /usr/bin/X (0x7f483eb63000+0x6d472) [0x7f483ebd0472] (EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f4838ec6000+0x5f44) [0x7f4838ecbf44] (EE) 3: /usr/bin/X (0x7f483eb63000+0x96927) [0x7f483ebf9927] (EE) 4: /usr/bin/X (0x7f483eb63000+0xc0328) [0x7f483ec23328] (EE) 5: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f483dc66000+0xfbd0) [0x7f483dc75bd0] (EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7f483c983747] (EE) 7: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7f483da5e338] (EE) 8: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f483b405000+0x39010) [0x7f483b43e010] (EE) 9: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f483b405000+0x3a1f7) [0x7f483b43f1f7] (EE) 10: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7f483b405000+0x60d51) [0x7f483b465d51] (EE) 11: /usr/bin/X (BlockHandler+0x44) [0x7f483ebbfb94] (EE) 12: /usr/bin/X (WaitForSomething+0x114) [0x7f483ed107f4] (EE) 13: /usr/bin/X (0x7f483eb63000+0x58811) [0x7f483ebbb811] (EE) 14: /usr/bin/X (0x7f483eb63000+0x4757a) [0x7f483ebaa57a] (EE) 15: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7f483c8b3ea5] (EE) 16: /usr/bin/X (0x7f483eb63000+0x478c1) [0x7f483ebaa8c1] (EE) [ 24028.788] (EE) intel(0): Detected a hung GPU, disabling acceleration. [ 24028.788] (EE) intel(0): When reporting this, please include i915_error_state from debugfs and the full dmesg. [ 24028.788] [mi] Increasing EQ size to 512 to prevent dropped events. [ 24028.788] [mi] EQ processing has resumed after 161 dropped events. [ 24028.788] [mi] This may be caused my a misbehaving driver monopolizing the server's resources. [ 24048.780] (II) AIGLX: Suspending AIGLX clients for VT switch Thanks a lot for your time and help. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/1077616 Title: 10de:0ca3 (EE) [mi] EQ overflowing. Additional events will be discarded until existing events are processed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/1077616/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
