Comment 0 for bug 1247410

My philips MCE USB receiver (mceusb device) does not work with Lirc. System is ubuntu 12.04-mini.

Running irw does nothing, running it a second time gives "Connection refused".

xbmc@Media-PC:~$ irw
xbmc@Media-PC:~$ irw
connect: Connection refused

After the first irw, lirc is already 'hanging'! Restarting the lirc service will hang the terminal which you will try to run it from, sudo dpkg-reconfigure lirc will also hang the terminal plus give a dpkg-configure -a error on next boot.
On reboot the system will hang as well, only option being REISUB.

syslog after running irw twice:

Nov 2 15:49:49 Media-PC lircd-0.9.0[1963]: accepted new client on /var/run/lirc/lircd
Nov 2 15:49:49 Media-PC kernel: [ 243.967430] BUG: unable to handle kernel NULL pointer dereference at (null)
Nov 2 15:49:49 Media-PC kernel: [ 243.967447] IP: [< (null)>] (null)
Nov 2 15:49:49 Media-PC kernel: [ 243.967455] PGD 1284f8067 PUD 125b54067 PMD 0
Nov 2 15:49:49 Media-PC kernel: [ 243.967466] Oops: 0010 [#1] SMP
Nov 2 15:49:49 Media-PC kernel: [ 243.967474] CPU 1
Nov 2 15:49:49 Media-PC kernel: [ 243.967477] Modules linked in: rc_imon_pad(O) imon(O) rfcomm bnep bluetooth joydev vesafb snd_hda_codec_hdmi stv6110x(O) lnbp21(O) hid_apple usbhid hid stv090x(O) ir_sanyo_decoder(O) ir_lirc_codec(O) lirc_dev(O) ir_mce_kbd_decoder(O) ir_sony_decoder(O) ir_jvc_decoder(O) ppdev ir_rc6_decoder(O) snd_hda_codec_via ir_rc5_decoder(O) ir_nec_decoder(O) rc_rc6_mce(O) snd_hda_intel snd_hda_codec snd_hwdep snd_pcm mceusb(O) rc_core(O) parport_pc psmouse serio_raw snd_seq_midi snd_rawmidi k10temp sp5100_tco snd_seq_midi_event snd_seq i2c_piix4 edac_core edac_mce_amd fglrx(P) snd_timer snd_seq_device mac_hid snd ngene(O) wmi dvb_core(O) soundcore cxd2099(O) snd_page_alloc shpchp lp parport pata_atiixp r8169 firewire_ohci firewire_core crc_itu_t
Nov 2 15:49:49 Media-PC kernel: [ 243.967583]
Nov 2 15:49:49 Media-PC kernel: [ 243.967590] Pid: 1963, comm: lircd Tainted: P O 3.2.0-55-generic #85-Ubuntu System manufacturer System Product Name/M4A785TD-M EVO
Nov 2 15:49:49 Media-PC kernel: [ 243.967602] RIP: 0010:[<0000000000000000>] [< (null)>] (null)
Nov 2 15:49:49 Media-PC kernel: [ 243.967611] RSP: 0018:ffff880125b5dba0 EFLAGS: 00010246
Nov 2 15:49:49 Media-PC kernel: [ 243.967617] RAX: 0000000000000000 RBX: ffff880124cad000 RCX: 000000000f900000
Nov 2 15:49:49 Media-PC kernel: [ 243.967623] RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff880124cad000
Nov 2 15:49:49 Media-PC kernel: [ 243.967628] RBP: ffff880125b5dbc8 R08: 0000000000000000 R09: 0000000000000000
Nov 2 15:49:49 Media-PC kernel: [ 243.967634] R10: ffff88012888df00 R11: 0000000000000005 R12: ffff880124cad2c8
Nov 2 15:49:49 Media-PC kernel: [ 243.967639] R13: 0000000000000000 R14: ffff880106107c00 R15: ffffffffa0507040
Nov 2 15:49:49 Media-PC kernel: [ 243.967647] FS: 00007fba68b1b740(0000) GS:ffff88012fc40000(0000) knlGS:0000000000000000
Nov 2 15:49:49 Media-PC kernel: [ 243.967653] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Nov 2 15:49:49 Media-PC kernel: [ 243.967658] CR2: 0000000000000000 CR3: 00000001284e4000 CR4: 00000000000006e0
Nov 2 15:49:49 Media-PC kernel: [ 243.967664] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Nov 2 15:49:49 Media-PC kernel: [ 243.967670] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Nov 2 15:49:49 Media-PC kernel: [ 243.967677] Process lircd (pid: 1963, threadinfo ffff880125b5c000, task ffff88012483dc00)
Nov 2 15:49:49 Media-PC kernel: [ 243.967682] Stack:
Nov 2 15:49:49 Media-PC kernel: [ 243.967686] ffffffffa047a129 ffff880125b5dbc8 00000000fffffff0 ffff88012726b100
Nov 2 15:49:49 Media-PC kernel: [ 243.967698] ffff880124b6cff8 ffff880125b5dc28 ffffffffa04f336f ffff880125b5dc64
Nov 2 15:49:49 Media-PC kernel: [ 243.967709] ffffffff8117e060 0000000000000000 000000000f900000 ffff880124ff9001
Nov 2 15:49:49 Media-PC kernel: [ 243.967720] Call Trace:
Nov 2 15:49:49 Media-PC kernel: [ 243.967737] [<ffffffffa047a129>] ? rc_open+0x69/0x90 [rc_core]
Nov 2 15:49:49 Media-PC kernel: [ 243.967749] [<ffffffffa04f336f>] lirc_dev_fop_open+0xbf/0x240 [lirc_dev]
Nov 2 15:49:49 Media-PC kernel: [ 243.967762] [<ffffffff8117e060>] ? mount_fs+0x1b0/0x1b0
Nov 2 15:49:49 Media-PC kernel: [ 243.967773] [<ffffffff8117eaa9>] chrdev_open+0xd9/0x250
Nov 2 15:49:49 Media-PC kernel: [ 243.967782] [<ffffffff811781c0>] __dentry_open+0x2b0/0x380
Nov 2 15:49:49 Media-PC kernel: [ 243.967791] [<ffffffff8117e9d0>] ? cdev_put+0x30/0x30
Nov 2 15:49:49 Media-PC kernel: [ 243.967800] [<ffffffff8129fe4c>] ? security_inode_permission+0x1c/0x30
Nov 2 15:49:49 Media-PC kernel: [ 243.967810] [<ffffffff81185f7a>] ? inode_permission+0x4a/0x110
Nov 2 15:49:49 Media-PC kernel: [ 243.967818] [<ffffffff8117883d>] vfs_open+0x3d/0x40
Nov 2 15:49:49 Media-PC kernel: [ 243.967826] [<ffffffff81179740>] nameidata_to_filp+0x40/0x50
Nov 2 15:49:49 Media-PC kernel: [ 243.967835] [<ffffffff811887b8>] do_last+0x3f8/0x730
Nov 2 15:49:49 Media-PC kernel: [ 243.967843] [<ffffffff81189e91>] path_openat+0xd1/0x3f0
Nov 2 15:49:49 Media-PC kernel: [ 243.967853] [<ffffffff8118a2d2>] do_filp_open+0x42/0xa0
Nov 2 15:49:49 Media-PC kernel: [ 243.967862] [<ffffffff8131c751>] ? strncpy_from_user+0x31/0x40
Nov 2 15:49:49 Media-PC kernel: [ 243.967870] [<ffffffff8118561a>] ? do_getname+0x10a/0x180
Nov 2 15:49:49 Media-PC kernel: [ 243.967880] [<ffffffff816611ce>] ? _raw_spin_lock+0xe/0x20
Nov 2 15:49:49 Media-PC kernel: [ 243.967889] [<ffffffff811975f7>] ? alloc_fd+0xf7/0x150
Nov 2 15:49:49 Media-PC kernel: [ 243.967898] [<ffffffff81179848>] do_sys_open+0xf8/0x240
Nov 2 15:49:49 Media-PC kernel: [ 243.967906] [<ffffffff811799b0>] sys_open+0x20/0x30
Nov 2 15:49:49 Media-PC kernel: [ 243.967915] [<ffffffff81669802>] system_call_fastpath+0x16/0x1b
Nov 2 15:49:49 Media-PC kernel: [ 243.967921] Code: Bad RIP value.
Nov 2 15:49:49 Media-PC kernel: [ 243.967931] RIP [< (null)>] (null)
Nov 2 15:49:49 Media-PC kernel: [ 243.967938] RSP <ffff880125b5dba0>
Nov 2 15:49:49 Media-PC kernel: [ 243.967942] CR2: 0000000000000000
Nov 2 15:49:49 Media-PC kernel: [ 243.967948] ---[ end trace 09c684bac2ebb775 ]---

So far I tried:
Blacklisting my unused imon modules ( in case they conflict, but it makes no difference)
Trying a lot lot of kernels; 3.5 and 3.8 for 12.04 LTS (linux-image-generic-lts-quantal and raring) , 3.9, 3.10.

One kernel DID work, and that was linux-image-3.8.13-03081311-generic from the ubuntu mainline ppa. However, this kernel caused system instability.