[ 96543.093] (II) evdev: Logitech USB Receiver: Configuring as mouse [ 96543.093] (II) evdev: Logitech USB Receiver: Configuring as keyboard [ 96543.093] (II) evdev: Logitech USB Receiver: Adding scrollwheel support [ 96543.093] (**) evdev: Logitech USB Receiver: YAxisMapping: buttons 4 and 5 [ 96543.093] (**) evdev: Logitech USB Receiver: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200 [ 96543.093] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-1/1-1.4/1-1.4:1.1/input/input24/event10" [ 96543.093] (II) XINPUT: Adding extended input device "Logitech USB Receiver" (type: KEYBOARD, id 13) [ 96543.093] (**) Option "xkb_rules" "evdev" [ 96543.093] (**) Option "xkb_model" "pc105" [ 96543.093] (**) Option "xkb_layout" "us" [ 96543.093] (II) evdev: Logitech USB Receiver: initialized for relative axes. [ 96543.093] (WW) evdev: Logitech USB Receiver: ignoring absolute axes. [ 96543.093] (**) Logitech USB Receiver: (accel) keeping acceleration scheme 1 [ 96543.093] (**) Logitech USB Receiver: (accel) acceleration profile 0 [ 96543.093] (**) Logitech USB Receiver: (accel) acceleration factor: 2.000 [ 96543.093] (**) Logitech USB Receiver: (accel) acceleration threshold: 4 [103549.806] [mi] EQ overflowing. Additional events will be discarded until existing events are processed. [103549.827] Backtrace: [103550.044] 0: /usr/bin/X (xorg_backtrace+0x26) [0x7fb8f688a856] [103550.044] 1: /usr/bin/X (mieqEnqueue+0x263) [0x7fb8f686af33] [103550.044] 2: /usr/bin/X (0x7fb8f6702000+0x62924) [0x7fb8f6764924] [103550.044] 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fb8eeb7b000+0x5d88) [0x7fb8eeb80d88] [103550.045] 4: /usr/bin/X (0x7fb8f6702000+0x8adf7) [0x7fb8f678cdf7] [103550.045] 5: /usr/bin/X (0x7fb8f6702000+0xb0d3a) [0x7fb8f67b2d3a] [103550.045] 6: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fb8f5a28000+0xfcb0) [0x7fb8f5a37cb0] [103550.059] 7: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fb8ef663000+0x8f890) [0x7fb8ef6f2890] [103550.059] 8: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fb8ef663000+0xfa593) [0x7fb8ef75d593] [103550.059] 9: /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so (0x7fb8ef663000+0x4db47d) [0x7fb8efb3e47d] [103550.059] 10: /usr/bin/X (0x7fb8f6702000+0x1142b2) [0x7fb8f68162b2] [103550.059] 11: /usr/bin/X (ValidateGC+0x24) [0x7fb8f67621d4] [103550.059] 12: /usr/bin/X (0x7fb8f6702000+0x1064e8) [0x7fb8f68084e8] [103550.059] 13: /usr/bin/X (miCompositeRects+0x7a) [0x7fb8f680866a] [103550.059] 14: /usr/bin/X (0x7fb8f6702000+0x10ea86) [0x7fb8f6810a86] [103550.059] 15: /usr/bin/X (0x7fb8f6702000+0x4e791) [0x7fb8f6750791] [103550.059] 16: /usr/bin/X (0x7fb8f6702000+0x3d6aa) [0x7fb8f673f6aa] [103550.059] 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7fb8f48bd76d] [103550.059] 18: /usr/bin/X (0x7fb8f6702000+0x3d99d) [0x7fb8f673f99d] [103550.059] [mi] These backtraces from mieqEnqueue may point to a culprit higher up the stack. 552,1 99%