Instead of rebuilding to 10.04 I decided to try Mythtv0.24+fixes with the 2.6.36 kernel. After some additional research/user-group posts I have managed to get my mythfrontend working pretty reliably with smooth HDTV playback (something I couldn't achieve before). There are a few glitches when moving from playback to menu but now in a much better state than before. Note, I upgraded both the backend and frontend systems to the same kernel & mythtv versions.
You can see my notes on my latest working setup here: http://michael.dtmc.ca/blog/2011/02/mythtv/ -- You received this bug notification because you are a member of Mythbuntu Bug Team, which is a direct subscriber. https://bugs.launchpad.net/bugs/659348 Title: Kernel Oops - unable to handle kernel paging request; EIP is at videobuf_dma_unmap+0x43/0xb0 Status in “linux” package in Ubuntu: New Bug description: This was not an issue prior to the Mythbuntu 10.10 upgrade I did a fresh install of Mythbuntu 10.10 and now during mythtv-setup my DVB-C tuners hang the application during a channel scan. Prior to this I was on 10.04 with myth autobuilds 0.23.1 and it worked with no issues. On amd64 using 2 HVR-1250's syslog reports this during the hangup Oct 12 10:51:03 Daves-DVR kernel: [ 100.685426] BUG: unable to handle kernel paging request at 0000010100000028 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685438] IP: [<ffffffffa0069563>] videobuf_dma_unmap+0x43/0xb0 [videobuf_dma_sg] Oct 12 10:51:03 Daves-DVR kernel: [ 100.685456] PGD 0 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685462] Oops: 0000 [#1] SMP Oct 12 10:51:03 Daves-DVR kernel: [ 100.685469] last sysfs file: /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor Oct 12 10:51:03 Daves-DVR kernel: [ 100.685476] CPU 1 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685479] Modules linked in: mceusb ir_lirc_codec lirc_dev snd_hda_codec_realtek mt2131 s5h1409 tuner_simple tuner_types tuner tvaudio tda7432 msp3400 nvidia(P) snd_hda_intel ir_sony_decoder snd_bt87x snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq ir_jvc_decoder snd_timer snd_seq_device ir_rc6_decoder cx23885 cx2341x ir_rc5_decoder bttv videobuf_dvb ir_nec_decoder v4l2_common videodev v4l1_compat v4l2_compat_ioctl32 snd asus_atk0110 i2c_algo_bit videobuf_dma_sg ir_common ir_core edac_core dvb_core videobuf_core btcx_risc soundcore psmouse k10temp lp edac_mce_amd tveeprom snd_page_alloc serio_raw parport i2c_piix4 usb_storage usbhid hid r8169 mii ahci libahci pata_atiixp Oct 12 10:51:03 Daves-DVR kernel: [ 100.685574] Oct 12 10:51:03 Daves-DVR kernel: [ 100.685583] Pid: 2127, comm: cx23885[0] dvb Tainted: P 2.6.35-22-generic #34-Ubuntu M4A78 PLUS/System Product Name Oct 12 10:51:03 Daves-DVR kernel: [ 100.685590] RIP: 0010:[<ffffffffa0069563>] [<ffffffffa0069563>] videobuf_dma_unmap+0x43/0xb0 [videobuf_dma_sg] Oct 12 10:51:03 Daves-DVR kernel: [ 100.685605] RSP: 0018:ffff880128687dc0 EFLAGS: 00010246 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685611] RAX: 0000010100000000 RBX: ffff88012ae23ef8 RCX: 0000000000000002 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685616] RDX: 0000000000000006 RSI: ffffc900110f5000 RDI: ffff880129c080a0 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685622] RBP: ffff880128687dd0 R08: 0000000000000000 R09: 00000000ffffffff Oct 12 10:51:03 Daves-DVR kernel: [ 100.685627] R10: 00000000ffffffff R11: 0000000000000001 R12: ffff880115ba5828 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685633] R13: ffff88012ae23ef8 R14: ffff880115ba5828 R15: ffff88012b1e2dc0 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685639] FS: 00007f0b8ea8b840(0000) GS:ffff880001e40000(0000) knlGS:0000000000000000 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685646] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Oct 12 10:51:03 Daves-DVR kernel: [ 100.685651] CR2: 0000010100000028 CR3: 000000011374c000 CR4: 00000000000006e0 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685657] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685663] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685670] Process cx23885[0] dvb (pid: 2127, threadinfo ffff880128686000, task ffff88012b1e2dc0) Oct 12 10:51:03 Daves-DVR kernel: [ 100.685675] Stack: Oct 12 10:51:03 Daves-DVR kernel: [ 100.685678] ffff88012ae23ef8 ffff88012ae23e00 ffff880128687e00 ffffffffa0c9412a Oct 12 10:51:03 Daves-DVR kernel: [ 100.685687] <0> ffff880128687df0 ffff880115ba5828 ffff880115ba5828 ffff880115ba5928 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685696] <0> ffff880128687e10 ffffffffa0c95d5e ffff880128687e40 ffffffffa0108457 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685706] Call Trace: Oct 12 10:51:03 Daves-DVR kernel: [ 100.685727] [<ffffffffa0c9412a>] cx23885_free_buffer+0x5a/0xa0 [cx23885] Oct 12 10:51:03 Daves-DVR kernel: [ 100.685745] [<ffffffffa0c95d5e>] dvb_buf_release+0xe/0x10 [cx23885] Oct 12 10:51:03 Daves-DVR kernel: [ 100.685759] [<ffffffffa0108457>] videobuf_queue_cancel+0xf7/0x120 [videobuf_core] Oct 12 10:51:03 Daves-DVR kernel: [ 100.685772] [<ffffffffa01084e7>] __videobuf_read_stop+0x17/0x70 [videobuf_core] Oct 12 10:51:03 Daves-DVR kernel: [ 100.685784] [<ffffffffa010855e>] videobuf_read_stop+0x1e/0x30 [videobuf_core] Oct 12 10:51:03 Daves-DVR kernel: [ 100.685794] [<ffffffffa00fd8c8>] videobuf_dvb_thread+0x168/0x1e0 [videobuf_dvb] Oct 12 10:51:03 Daves-DVR kernel: [ 100.685805] [<ffffffffa00fd760>] ? videobuf_dvb_thread+0x0/0x1e0 [videobuf_dvb] Oct 12 10:51:03 Daves-DVR kernel: [ 100.685815] [<ffffffff8107f0b6>] kthread+0x96/0xa0 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685825] [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685833] [<ffffffff8107f020>] ? kthread+0x0/0xa0 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685840] [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685844] Code: 19 75 6e 8b 53 28 85 d2 74 4b 48 8b 7f 28 8b 4b 30 48 8b 73 20 48 85 ff 74 4e 48 8b 87 e8 01 00 00 48 85 c0 74 42 83 f9 02 77 5d <48> 8b 40 28 48 85 c0 74 0a 45 31 c0 90 ff d0 48 8b 73 20 48 89 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685911] RIP [<ffffffffa0069563>] videobuf_dma_unmap+0x43/0xb0 [videobuf_dma_sg] Oct 12 10:51:03 Daves-DVR kernel: [ 100.685923] RSP <ffff880128687dc0> Oct 12 10:51:03 Daves-DVR kernel: [ 100.685926] CR2: 0000010100000028 Oct 12 10:51:03 Daves-DVR kernel: [ 100.685932] ---[ end trace 5a49d3fff27e282f ]--- ProblemType: Bug DistroRelease: Ubuntu 10.10 Package: linux-image-2.6.35-22-generic 2.6.35-22.34 Regression: Yes Reproducible: Yes ProcVersionSignature: Ubuntu 2.6.35-22.34-generic 2.6.35.4 Uname: Linux 2.6.35-22-generic x86_64 NonfreeKernelModules: nvidia AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D2c', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D1c', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'SB'/'HDA ATI SB at 0xf7ff4000 irq 16' Mixer name : 'Realtek ALC887' Components : 'HDA:10ec0887,10ec0887,00100202' Controls : 35 Simple ctrls : 20 Card1.Amixer.info: Card hw:1 'Bt878'/'Brooktree Bt878 at 0xf6ffe000, irq 21' Mixer name : 'Bt87x' Components : '' Controls : 3 Simple ctrls : 5 Date: Tue Oct 12 13:10:00 2010 HibernationDevice: RESUME=UUID=22c715e9-7847-43b1-9bd9-90a6c992662f InstallationMedia: Mythbuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) IwConfig: lo no wireless extensions. eth0 no wireless extensions. MachineType: System manufacturer System Product Name ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=e7ff114d-2fa0-4ed3-8412-b33488f03dce ro quiet splash ProcEnviron: LANG=en_US.UTF-8 SHELL=/bin/bash RelatedPackageVersions: linux-firmware 1.38 RfKill: SourcePackage: linux dmi.bios.date: 04/02/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2004 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: M4A78 PLUS dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2004:bd04/02/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A78PLUS:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer _______________________________________________ Mailing list: https://launchpad.net/~mythbuntu-bugs Post to : [email protected] Unsubscribe : https://launchpad.net/~mythbuntu-bugs More help : https://help.launchpad.net/ListHelp
