Starting chromium freezes Me-TV

[Daniel]

Hi There

I have the problem that every time when chromium starts, my running me-tv session freezes.

STEPS TO REPRODUCE

1. everything closed
2. Start me-tv, wait for playback
3. Start chromium
4. me-tv picture freezes and audio playback stops. dmesg prints "tda9887 8-0043: i2c i/o error: rc == -6 (should be 4)"
5. close me-tv while chromium is still running
6. dmesg prints stack trace (see below)
7. Stop me-tv by pressing Ctrl+Q
8. Start me-tv again
9. me-tv works without problems, chromium is still running

LOG MESSAGES

I wasn't ably to find any helpful log messages but these:

dmesg after starting chromium

    [ 7214.127110] tda9887 8-0043: i2c i/o error: rc == -6 (should be 4)

dmesg after quitting chromium

    [ 7236.212694] ------------[ cut here ]------------
    [ 7236.212705] WARNING: CPU: 5 PID: 7784 at /build/buildd/linux-3.13.0/fs/proc/generic.c:511 remove_proc_entry+0x139/0x1b0()
    [ 7236.212707] name 'fs/nfsfs'
    [ 7236.212709] Modules linked in: dm_crypt snd_hrtimer pci_stub vboxpci(OX) vboxnetadp(OX) vboxnetflt(OX) vboxdrv(OX) cuse veth xt_CHECKSUM iptable_mangle ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables autofs4 bnep deflate ctr twofish_generic twofish_avx_x86_64 twofish_x86_64_3way twofish_x86_64 twofish_common camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 serpent_avx_x86_64 serpent_sse2_x86_64 xts serpent_generic blowfish_generic blowfish_x86_64 blowfish_common cast5_avx_x86_64 cast5_generic cast_common des_generic cmac xcbc rmd160 crypto_null af_key xfrm_algo rfcomm bluetooth binfmt_misc nfsd auth_rpcgss nfs_acl nfs lockd sunrpc fscache cx88_blackbird cx2341x cx22702 cx88_dvb cx88_vp3054_i2c videobuf_dvb wm8775 dvb_core tuner_simple tuner_types tda9887 tda8290 tuner cx8800 cx8802 cx88_alsa cx88xx btcx_risc tveeprom videobuf_dma_sg rc_core v4l2_common videobuf_core videodev snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel intel_rapl snd_hda_codec x86_pkg_temp_thermal intel_powerclamp coretemp snd_hwdep kvm_intel snd_pcm kvm snd_page_alloc snd_seq_midi snd_seq_midi_event crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_rawmidi aesni_intel aes_x86_64 lrw snd_seq gf128mul glue_helper ablk_helper snd_seq_device cryptd snd_timer snd serio_raw lpc_ich mei_me soundcore mei mac_hid parport_pc ppdev lp parport btrfs xor raid6_pq libcrc32c hid_generic i915 i2c_algo_bit usbhid drm_kms_helper ahci psmouse usb_storage libahci hid drm atl1c video
    [ 7236.212772] CPU: 5 PID: 7784 Comm: kworker/u16:0 Tainted: G W OX 3.13.0-37-generic #64-Ubuntu
    [ 7236.212773] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./H77-DS3H, BIOS F5 05/14/2012
    [ 7236.212776] Workqueue: netns cleanup_net
    [ 7236.212777] 0000000000000009 ffff8801fca47c80 ffffffff8171ed09 ffff8801fca47cc8
    [ 7236.212779] ffff8801fca47cb8 ffffffff8106773d 0000000000000000 0000000000000005
    [ 7236.212780] ffffffffa067c8a8 ffff880216805b30 0000000000000200 ffff8801fca47d18
    [ 7236.212782] Call Trace:
    [ 7236.212785] [<ffffffff8171ed09>] dump_stack+0x45/0x56
    [ 7236.212787] [<ffffffff8106773d>] warn_slowpath_common+0x7d/0xa0
    [ 7236.212789] [<ffffffff810677ac>] warn_slowpath_fmt+0x4c/0x50
    [ 7236.212792] [<ffffffff81229839>] remove_proc_entry+0x139/0x1b0
    [ 7236.212800] [<ffffffffa065c4e2>] nfs_fs_proc_net_exit+0x62/0x70 [nfs]
    [ 7236.212805] [<ffffffffa06625b2>] nfs_net_exit+0x12/0x20 [nfs]
    [ 7236.212807] [<ffffffff8161b409>] ops_exit_list.isra.1+0x39/0x60
    [ 7236.212808] [<ffffffff8161bc90>] cleanup_net+0x110/0x250
    [ 7236.212811] [<ffffffff810839c2>] process_one_work+0x182/0x450
    [ 7236.212812] [<ffffffff810847b1>] worker_thread+0x121/0x410
    [ 7236.212814] [<ffffffff81084690>] ? rescuer_thread+0x430/0x430
    [ 7236.212816] [<ffffffff8108b492>] kthread+0xd2/0xf0
    [ 7236.212817] [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0
    [ 7236.212819] [<ffffffff8172f77c>] ret_from_fork+0x7c/0xb0
    [ 7236.212820] [<ffffffff8108b3c0>] ? kthread_create_on_node+0x1c0/0x1c0
    [ 7236.212821] ---[ end trace 91c959672924c77b ]---

RESEARCH

I tried to find information about fs/nfsfs which looks like a file system driver, but even google didn't find a result for this. I know nfs (the network protocol) but it is not in use on my system.

FURTHER INFORMATION

- My video card is a Hauppauge HVR-1300. This device already made problems in the past, but these problems were about startup and initializing.
- The only one connection which I see between these two application are audio and probably direct graphics output. For audio I would expect some helpful log messages, but there is not more information than the kernel stack trace and the i2c message.
- I think there is somthing in the initialization sequence of chromium. First I thought it's the pepper flash plugin but I have the same problem when I remove the plugin.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: chromium-browser 37.0.2062.120-0ubuntu0.14.04.1~pkg1049
ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
Uname: Linux 3.13.0-37-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri Oct 24 22:26:17 2014
SourcePackage: chromium-browser
UpgradeStatus: Upgraded to trusty on 2014-04-18 (189 days ago)
modified.conffile..etc.default.chromium.browser: [deleted]
mtime.conffile..etc.chromium.browser.default: 2014-04-12T16:01:25

[Paul White (paulw2u)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. You reported this bug some time ago and there have been many changes in Ubuntu since that time. Your problem may have been fixed with some of the updates.

It would help us a lot if you could test on a currently supported Ubuntu version. When you test it and it is still an issue, kindly upload the updated logs by running only once in a terminal:

apport-collect 1385482

and add any additional information that you think relevant. Alternatively, please confirm that this is no longer a problem and that we can close the report. If we do not hear from you the bug report will close itself in approximately two months time.

Thank you again for helping make Ubuntu better.

Paul White
[Ubuntu Bug Squad]

[Launchpad Janitor (janitor)]

[Expired for chromium-browser (Ubuntu) because there has been no activity for 60 days.]