From: Florian Fuchs <fuchsfl@gmail.com>
Subject: PROBLEM: Module hid_logitech_dj: None of the paired devices work,
 if one of them is not available on load
Date: Sun, 13 Jan 2013 20:11:09 +0100
Message-ID: <50F306CD.5020606@gmail.com>
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Sender: linux-input-owner@vger.kernel.org
To: linux-input@vger.kernel.org
Cc: nlopezcasad@logitech.com

Hi there,

I have an issue with the Logitech unified USB adapter, which is paired 
with two devices - a wireless keyboard and mouse. The keyboard is not 
always in use - so I turn this device off. In result the mouse is also 
not working.
It seems that, all paired devices have to be available, when the module 
is initialised, in order to use one of them.

Once the module is loaded, I can remove the adapter and plug it in 
again, then the mouse works - so this is the workaround for me.
If  both devices are turned on, on startup, everything works fine.

Regards,
Flo

dmesg:
[    1.659267] asus_wmi: SFUN value: 0x6a0877<6>[    1.661154] usb 3-3: 
New USB device found, idVendor=046d, idProduct=c52b
[    1.661159] usb 3-3: New USB device strings: Mfr=1, Product=2, 
SerialNumber=0
[    1.661162] usb 3-3: Product: USB Receiver
[    1.661165] usb 3-3: Manufacturer: Logitech
[    1.677071] usbcore: registered new interface driver usbhid
[    1.677073] usbhid: USB HID core driver
[    1.680449] logitech-djreceiver 0003:046D:C52B.0003: hiddev0,hidraw0: 
USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-3/input2
[    1.680717] logitech-djreceiver 0003:046D:C52B.0003: 
logi_dj_probe:logi_dj_recv_query_paired_devices error:-32
[    1.680880] logitech-djreceiver: probe of 0003:046D:C52B.0003 failed 
with error -32


Kernel version (from /proc/version):
Linux version 3.7.2custom (root@flo-u) (gcc version 4.7.2 (Ubuntu/Linaro 
4.7.2-2ubuntu1) ) #1 SMP Sat Jan 12 14:50:13 CET 2013

Software:
flo@flo-u:~$ perl linux-stable/scripts/ver_linux
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.

Linux flo-u 3.7.2custom #1 SMP Sat Jan 12 14:50:13 CET 2013 x86_64 
x86_64 x86_64 GNU/Linux

Gnu C                  4.7
Gnu make               3.81
binutils               2.22.90.20120924
util-linux             2.20.1
mount                  support
module-init-tools      3.16
e2fsprogs              1.42.5
pcmciautils            018
PPP                    2.4.5
Linux C Library        2.15
Dynamic linker (ldd)   2.15
Procps                 3.3.3
Net-tools              1.60
Kbd                    1.15.3
Sh-utils               8.13
wireless-tools         30
Modules Loaded         hid_logitech_dj bnep rfcomm binfmt_misc 
nls_iso8859_1 snd_hda_codec_realtek joydev coretemp ghash_clmulni_intel 
aesni_intel ablk_helper cryptd lrw aes_x86_64 xts gf128mul asus_nb_wmi 
asus_wmi sparse_keymap snd_hda_intel snd_hda_codec snd_hwdep snd_pcm 
microcode snd_seq_midi psmouse arc4 serio_raw snd_rawmidi 
snd_seq_midi_event i915 snd_seq snd_timer snd_seq_device iwldvm btusb 
lpc_ich bluetooth mac80211 nouveau ttm snd drm_kms_helper iwlwifi drm 
soundcore cfg80211 snd_page_alloc i2c_algo_bit mei mxm_wmi video wmi 
usbhid hid