こんにちは。

14.04の時からEasyCapというUSBビデオキャプチャデバイスを使っています。14.04の時はvlcでビデオデバイス名を/dev/video0に設定するだけでキャプチャできました。16.04で同様の作業をすると、

入力を開くことができません:
VLCはMRL 'v4l2:///dev/video0'を開けません。詳細はログを確認してください。

と、表示され、dmesgで当該ログを確認すると以下のようになっていました。これについて、どなたか情報をお持ちの方はいらっしゃいますか？

[11375.695712] ohci-pci 0000:00:13.0: leak ed ffff880424eb4930 (#81) state 2
[11375.863079] ------------[ cut here ]------------
[11375.863094] WARNING: CPU: 0 PID: 10454 at /build/linux-dcxD3m/linux-4.4.0/drivers/media/v4l2-core/videobuf2-core.c:1335 vb2_start_streaming+0xe0/0x180 [videobuf2_core]()
[11375.863097] Modules linked in: usbtv ftdi_sio usbserial hidp rfcomm pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep kvm_amd kvm irqbypass uvcvideo videobuf2_vmalloc serio_raw videobuf2_memops input_leds videobuf2_v4l2 videobuf2_core joydev v4l2_common snd_usb_audio videodev btusb snd_usbmidi_lib media btrtl btbcm btintel bluetooth k10temp fam15h_power edac_mce_amd edac_core i2c_piix4 snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq 8250_fintek snd_seq_device snd_timer snd tpm_infineon soundcore mac_hid shpchp parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_generic usbhid hid crct10dif_pclmul crc32_pclmul aesni_intel
[11375.863161]  aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd amdkfd amd_iommu_v2 radeon psmouse i2c_algo_bit ttm r8169 drm_kms_helper mii syscopyarea sysfillrect sysimgblt fb_sys_fops ahci libahci drm video fjes
[11375.863184] CPU: 0 PID: 10454 Comm: vlc Tainted: G        W  OE   4.4.0-31-generic #50-Ubuntu
[11375.863187] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./F2A88XM-D3H, BIOS F4 11/27/2013
[11375.863190]  0000000000000286 00000000966ea287 ffff88038dc1fbf0 ffffffff813f1143
[11375.863195]  0000000000000000 ffffffffc05714f0 ffff88038dc1fc28 ffffffff81081102
[11375.863198]  ffff880429aff4a0 ffff880429aff4b8 ffff880429aff640 00000000ffffffe4
[11375.863202] Call Trace:
[11375.863211]  [<ffffffff813f1143>] dump_stack+0x63/0x90
[11375.863217]  [<ffffffff81081102>] warn_slowpath_common+0x82/0xc0
[11375.863221]  [<ffffffff8108124a>] warn_slowpath_null+0x1a/0x20
[11375.863226]  [<ffffffffc056dc70>] vb2_start_streaming+0xe0/0x180 [videobuf2_core]
[11375.863231]  [<ffffffffc056e268>] vb2_core_streamon+0xf8/0x130 [videobuf2_core]
[11375.863237]  [<ffffffffc0634de9>] vb2_streamon+0x29/0x50 [videobuf2_v4l2]
[11375.863242]  [<ffffffffc0634e52>] vb2_ioctl_streamon+0x42/0x50 [videobuf2_v4l2]
[11375.863254]  [<ffffffffc05bd98a>] v4l_streamon+0x1a/0x20 [videodev]
[11375.863263]  [<ffffffffc05c12c1>] __video_do_ioctl+0x291/0x310 [videodev]
[11375.863269]  [<ffffffff810ab110>] ? check_preempt_curr+0x80/0x90
[11375.863272]  [<ffffffff810ab139>] ? ttwu_do_wakeup+0x19/0xe0
[11375.863282]  [<ffffffffc05c0d96>] video_usercopy+0x336/0x5b0 [videodev]
[11375.863291]  [<ffffffffc05c1030>] ? video_ioctl2+0x20/0x20 [videodev]
[11375.863295]  [<ffffffff810cbea4>] ? rwsem_wake+0x64/0xa0
[11375.863304]  [<ffffffffc05c1025>] video_ioctl2+0x15/0x20 [videodev]
[11375.863313]  [<ffffffffc05bc685>] v4l2_ioctl+0xb5/0xe0 [videodev]
[11375.863317]  [<ffffffff81220c0f>] do_vfs_ioctl+0x29f/0x490
[11375.863321]  [<ffffffff81220e79>] SyS_ioctl+0x79/0x90
[11375.863325]  [<ffffffff8182db32>] entry_SYSCALL_64_fastpath+0x16/0x71
[11375.863328] ---[ end trace c8f915d0b67bcf93 ]---
[11375.875771] ohci-pci 0000:00:13.0: leak ed ffff880424eb49a0 (#81) state 2
[11376.042095] ------------[ cut here ]------------
[11376.042110] WARNING: CPU: 2 PID: 10454 at /build/linux-dcxD3m/linux-4.4.0/drivers/media/v4l2-core/videobuf2-core.c:1335 vb2_start_streaming+0xe0/0x180 [videobuf2_core]()
[11376.042113] Modules linked in: usbtv ftdi_sio usbserial hidp rfcomm pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep kvm_amd kvm irqbypass uvcvideo videobuf2_vmalloc serio_raw videobuf2_memops input_leds videobuf2_v4l2 videobuf2_core joydev v4l2_common snd_usb_audio videodev btusb snd_usbmidi_lib media btrtl btbcm btintel bluetooth k10temp fam15h_power edac_mce_amd edac_core i2c_piix4 snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq 8250_fintek snd_seq_device snd_timer snd tpm_infineon soundcore mac_hid shpchp parport_pc ppdev lp parport autofs4 drbg ansi_cprng algif_skcipher af_alg dm_crypt hid_generic usbhid hid crct10dif_pclmul crc32_pclmul aesni_intel
[11376.042176]  aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd amdkfd amd_iommu_v2 radeon psmouse i2c_algo_bit ttm r8169 drm_kms_helper mii syscopyarea sysfillrect sysimgblt fb_sys_fops ahci libahci drm video fjes
[11376.042199] CPU: 2 PID: 10454 Comm: vlc Tainted: G        W  OE   4.4.0-31-generic #50-Ubuntu
[11376.042202] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./F2A88XM-D3H, BIOS F4 11/27/2013
[11376.042205]  0000000000000286 00000000966ea287 ffff88038dc1fbf0 ffffffff813f1143
[11376.042209]  0000000000000000 ffffffffc05714f0 ffff88038dc1fc28 ffffffff81081102
[11376.042213]  ffff880429aff4a0 ffff880429aff4b8 ffff880429aff640 00000000ffffffe4
[11376.042217] Call Trace:
[11376.042226]  [<ffffffff813f1143>] dump_stack+0x63/0x90
[11376.042232]  [<ffffffff81081102>] warn_slowpath_common+0x82/0xc0
[11376.042236]  [<ffffffff8108124a>] warn_slowpath_null+0x1a/0x20
[11376.042241]  [<ffffffffc056dc70>] vb2_start_streaming+0xe0/0x180 [videobuf2_core]
[11376.042246]  [<ffffffffc056e268>] vb2_core_streamon+0xf8/0x130 [videobuf2_core]
[11376.042251]  [<ffffffffc0634de9>] vb2_streamon+0x29/0x50 [videobuf2_v4l2]
[11376.042256]  [<ffffffffc0634e52>] vb2_ioctl_streamon+0x42/0x50 [videobuf2_v4l2]
[11376.042270]  [<ffffffffc05bd98a>] v4l_streamon+0x1a/0x20 [videodev]
[11376.042279]  [<ffffffffc05c12c1>] __video_do_ioctl+0x291/0x310 [videodev]
[11376.042289]  [<ffffffffc05c0d96>] video_usercopy+0x336/0x5b0 [videodev]
[11376.042299]  [<ffffffffc05c1030>] ? video_ioctl2+0x20/0x20 [videodev]
[11376.042308]  [<ffffffffc05c1025>] video_ioctl2+0x15/0x20 [videodev]
[11376.042317]  [<ffffffffc05bc685>] v4l2_ioctl+0xb5/0xe0 [videodev]
[11376.042322]  [<ffffffff81220c0f>] do_vfs_ioctl+0x29f/0x490
[11376.042325]  [<ffffffff81220e79>] SyS_ioctl+0x79/0x90
[11376.042330]  [<ffffffff8182db32>] entry_SYSCALL_64_fastpath+0x16/0x71
[11376.042333] ---[ end trace c8f915d0b67bcf94 ]---