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I have a Logitech Wireless headset. Worked fine under Debian Squeeze on old PC. Worked fine under Windows 10 on new PC. Worked well under Mac OS X 10.various although very occasional Skype issues with noise on microphone like radio interference (might be mobile phone, or DECT phone, or Wireless Router, or Bluetooth, or various WiFi devices, electrical hell in my office). Get continuous sound issues when used with Debian Jessie on new PC. Have been through the change how kernel sound modules work due to changes in recent kernels to no effect. This is a USB connected wireless card, display as "Logitech Wireless Headset". They were detected automatically and initially works fine, then within minutes performance seems to degrade with time, particularly noticeable with scrolling in browser, and Einstein logic puzzle game. On one occasion the sound quality corrupted to the point that I rebooted since nothing else was fixing the issue. Noted that Xorg thinks they are some sort of mouse and keyboard. That could well explain why things seem to be working badly, and getting worse. This looks plausibly similar.... https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-evdev/+bug/973297 However having read the bug report, and noticed a stack dump, not sure if there is a simple resolution here. Anyone follow this better before I raise a Debian bug referencing the Ubuntu one? The headset has some controls (volume up/down, mute, play, next/previous), but I've no idea how they are suppose to be handled under Linux. Fairly sure a stack trace shouldn't be produced in XOrg log :) And fairly sure headset doesn't have any mouse/movement detection, so no axes <stupid English plural form could be ambiguous here> needed. [ 32.912] (II) config/udev: Adding input device Logitech Logitech Wireless Headset (/dev/input/event2) [ 32.912] (**) Logitech Logitech Wireless Headset: Applying InputClass "evdev keyboard catchall" [ 32.912] (II) Using input driver 'evdev' for 'Logitech Logitech Wireless Headset' [ 32.912] (**) Logitech Logitech Wireless Headset: always reports core events [ 32.912] (**) evdev: Logitech Logitech Wireless Headset: Device: "/dev/input/event2" [ 32.912] (--) evdev: Logitech Logitech Wireless Headset: Vendor 0x46d Product 0xa29 [ 32.912] (--) evdev: Logitech Logitech Wireless Headset: Found absolute axes [ 32.912] (--) evdev: Logitech Logitech Wireless Headset: Found absolute multitouch axes [ 32.912] (II) evdev: Logitech Logitech Wireless Headset: No buttons found, faking one. [ 32.912] (--) evdev: Logitech Logitech Wireless Headset: Found keys [ 32.912] (II) evdev: Logitech Logitech Wireless Headset: Forcing relative x/y axes to exist. [ 32.913] (II) evdev: Logitech Logitech Wireless Headset: Configuring as mouse [ 32.913] (II) evdev: Logitech Logitech Wireless Headset: Configuring as keyboard [ 32.913] (**) evdev: Logitech Logitech Wireless Headset: YAxisMapping: buttons 4 and 5 [ 32.913] (**) evdev: Logitech Logitech Wireless Headset: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200 [ 32.913] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:10.0/usb1/1-2/1-2:1.3/0003:046D:0A29.0002/input/input2/event2" [ 32.913] (II) XINPUT: Adding extended input device "Logitech Logitech Wireless Headset" (type: KEYBOARD, id 8) [ 32.913] (**) Option "xkb_model" "pc105" [ 32.913] (**) Option "xkb_layout" "gb" [ 32.914] (EE) BUG: triggered 'if (axnum >= dev->valuator->numAxes)' [ 32.914] (EE) BUG: ../../Xi/exevents.c:2086 in InitValuatorAxisStruct() [ 32.914] (EE) [ 32.914] (EE) Backtrace: [ 32.914] (EE) 0: /usr/bin/X (xorg_backtrace+0x56) [0x7f87f43fed46] [ 32.914] (EE) 1: /usr/bin/X (InitValuatorAxisStruct+0x67) [0x7f87f438de77] [ 32.915] (EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f87e6ef1000+0x4f38) [0x7f87e6ef5f38] [ 32.915] (EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f87e6ef1000+0x53d6) [0x7f87e6ef63d6] [ 32.915] (EE) 4: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f87e6ef1000+0x7058) [0x7f87e6ef8058] [ 32.915] (EE) 5: /usr/bin/X (ActivateDevice+0x4a) [0x7f87f42943da] [ 32.915] (EE) 6: /usr/bin/X (0x7f87f4248000+0xa4b31) [0x7f87f42ecb31] [ 32.915] (EE) 7: /usr/bin/X (0x7f87f4248000+0xbb43b) [0x7f87f430343b] [ 32.915] (EE) 8: /usr/bin/X (0x7f87f4248000+0xbba13) [0x7f87f4303a13] [ 32.915] (EE) 9: /usr/bin/X (config_init+0x9) [0x7f87f4302669] [ 32.916] (EE) 10: /usr/bin/X (InitInput+0xbb) [0x7f87f42e03db] [ 32.916] (EE) 11: /usr/bin/X (0x7f87f4248000+0x5b559) [0x7f87f42a3559] [ 32.916] (EE) 12: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7f87f1f5db45] [ 32.916] (EE) 13: /usr/bin/X (0x7f87f4248000+0x4590e) [0x7f87f428d90e] [ 32.916] (EE) [ 32.916] (II) evdev: Logitech Logitech Wireless Headset: initialized for absolute axes. [ 32.916] (**) Logitech Logitech Wireless Headset: (accel) keeping acceleration scheme 1 [ 32.916] (**) Logitech Logitech Wireless Headset: (accel) acceleration profile 0 [ 32.916] (**) Logitech Logitech Wireless Headset: (accel) acceleration factor: 2.000 [ 32.916] (**) Logitech Logitech Wireless Headset: (accel) acceleration threshold: 4
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