Hello all, I have a Cinergy T2 Usb Box connected to my Linkstation NAS running Debian Testing armel and a 2.6.25.1 vanilla Kernel. the Cinergy module loads just fine but when I try to tune a channel I get a kernel Oops ( see below ). What I've tried so far: asking the google crystal ball... no realy good answer... different kernel: vanilla 2.6.25.1 orion git repositry used this kernels with hg repositries of v4l-dvb and v4l-dvb-experimental This is the output of a w_scan run: mythvdr:/usr/src/w_scan-20080105# ./w_scan w_scan version 20080105 Info: using DVB adapter auto detection. Found DVB-T frontend. Using adapter /dev/dvb/adapter0/frontend0 -_-_-_-_ Getting frontend capabilities-_-_-_-_ frontend TerraTec/qanu USB2.0 Highspeed DVB-T Receiver supports INVERSION_AUTO QAM_AUTO TRANSMISSION_MODE_AUTO GUARD_INTERVAL_AUTO HIERARCHY_AUTO FEC_AUTO -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ 177500: 184500: 191500: 198500: 205500: 212500: 219500: 226500: 474000: no signal(0x07) 482000: 490000: 498000: 506000: signal ok (I999B8C999D999M999T999G999Y999) 514000: 522000: 530000: 538000: signal ok (I999B8C999D999M999T999G999Y999) 546000: 554000: 562000: 570000: 578000: 586000: signal ok (I999B8C999D999M999T999G999Y999) 594000: 602000: 610000: 618000: 626000: 634000: 642000: 650000: 658000: 666000: 674000: 682000: 690000: signal ok (I999B8C999D999M999T999G999Y999) 698000: 706000: 714000: 722000: 730000: 738000: 746000: signal ok (I999B8C999D999M999T999G999Y999) 754000: 762000: signal ok (I999B8C999D999M999T999G999Y999) 770000: 778000: 786000: 794000: 802000: 810000: 818000: 826000: 834000: 842000: 850000: 858000: tune to: :506000:I999B8C999D999M999T999G999Y999:T:27500: here w_scan stops responding, no CTRL-C or kill can remove the process and this is what I get on the serial console: usb 2-1: new high speed USB device using orion-ehci and address 2/ttusb-budg usb 2-1: configuration #1 chosen from 1 choice usb 2-1: New USB device found, idVendor=0ccd, idProduct=0038 usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 2-1: Product: Cinergy T usb 2-1: Manufacturer: TerraTec GmbH DVB: registering new adapter (TerraTec/qanu USB2.0 Highspeed DVB-T Receiver) input: TerraTec/qanu USB2.0 Highspeed DVB-T Receiver remote control as /class/input/input0 usbcore: registered new interface driver cinergyT2 Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = c5b3c000 [00000000] *pgd=05bfa031, *pte=00000000, *ppte=00000000 Internal error: Oops: 817 [#1] PREEMPT Modules linked in: evdev cinergyT2 dvb_core CPU: 0 Not tainted (2.6.25.1 #3) PC is at dma_cache_maint+0x40/0x88 LR is at usb_hcd_submit_urb+0x14c/0x894 pc : [<c002f08c>] lr : [<c02909c8>] psr: 20000013 sp : c5ae3c90 ip : c5ae3ca0 fp : c5ae3c9c r10: c758cae8 r9 : 00000000 r8 : 00000020 r7 : c758dc00 r6 : c758cae0 r5 : 00000002 r4 : ffc50000 r3 : 00000000 r2 : 00000002 r1 : ffc50200 r0 : ffc50000 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: a005317f Table: 05b3c000 DAC: 00000015 Process w_scan (pid: 7384, stack limit = 0xc5ae2268) Stack: (0xc5ae3c90 to 0xc5ae4000) 3c80: c5ae3d54 c5ae3ca0 c02909c8 c002f05c 3ca0: c758dc00 c18f9c19 000000d2 c0411180 c5ae3d1c c5ae3cc0 c0072680 c003b5c8 3cc0: 00000044 00000001 c5ae2000 00000000 00000000 00000044 c0411184 00000000 3ce0: c5ae2000 00000000 00000001 00000000 20000013 00000001 000000d2 c0411180 3d00: 00000000 00000000 00100002 c7c3b3a0 c5ae3d74 c5ae3d20 c00728c0 c00723a8 3d20: 00000000 00000000 c0411184 c69f4000 00000002 00000000 00000020 00000000 3d40: c648ee70 c067e26c c5ae3d74 c5ae3d58 c0291494 c029088c c067e000 c067e000 3d60: 00000000 c067e1d8 c5ae3d8c c5ae3d78 bf014280 c0291264 ffffffff c067e000 3d80: c5ae3dac c5ae3d90 bf0143f4 bf014244 c067e000 c067e1e8 00000000 c067e1d8 3da0: c5ae3dcc c5ae3db0 bf014590 bf0143e0 c0084814 c8900000 c067e000 00000000 3dc0: c5ae3df4 c5ae3dd0 bf003f94 bf014548 000010dc 00000000 c8a15000 00000000 3de0: c8a15004 c067e230 c5ae3e34 c5ae3df8 bf0016e8 bf003e90 c009be90 00000000 3e00: c5ae3e2c c5ae3e10 c00941d0 c01d55a8 c8a15038 c8a15000 c5ae3e68 00000000 3e20: c8a1506c c067e26c c5ae3e5c c5ae3e38 bf001adc bf001464 bedf6b9c c5ae3e68 3e40: 0000403c 403c6f2b 00000001 00000000 c5ae3f14 c5ae3e60 bf0001b0 bf0018e0 3e60: bf012a48 c77d1240 00000000 00000000 00000000 00000000 00000000 00000000 3e80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 3ea0: 00000005 c5ae3eb0 c008f6e4 c0074bbc c77d1240 c5ae3f00 ffffff9c 00000004 3ec0: c5a6d000 00000000 c5ae3ef4 c5ae3ed8 c008f7e4 c008f590 00000000 c5a6d000 3ee0: c5ae2000 00000002 c5ae3f64 c77d1240 bedf6b9c 403c6f2b c77d1240 c0028c28 3f00: c5ae2000 00000000 c5ae3f2c c5ae3f18 bf000e40 bf0000dc bf0018d0 00000000 3f20: c5ae3f4c c5ae3f30 c009e6f0 bf000e34 40000013 c648ee70 c77d1240 bedf6b9c 3f40: c5ae3f7c c5ae3f50 c009e9d4 c009e684 c77d1240 00000004 c5ae3f94 00000004 3f60: bedf6b9c 403c6f2b c0028c28 c5ae2000 c5ae3fa4 c5ae3f80 c009ea34 c009e71c 3f80: 00000005 00000000 bedf74fc 0001a2f4 00000000 00000036 00000000 c5ae3fa8 3fa0: c0028a80 c009ea04 bedf74fc 0001a2f4 00000004 403c6f2b bedf6b9c 00000005 3fc0: bedf74fc 0001a2f4 00000000 00000036 00000001 00000000 bedf7bd4 0001a250 3fe0: 0001a180 bedf6b90 0000a7e4 400e210c a0000010 00000004 00000000 00000000 Backtrace: [<c002f04c>] (dma_cache_maint+0x0/0x88) from [<c02909c8>] (usb_hcd_submit_urb+0x14c/0x894) [<c029087c>] (usb_hcd_submit_urb+0x0/0x894) from [<c0291494>] (usb_submit_urb+0x240/0x25c) [<c0291254>] (usb_submit_urb+0x0/0x25c) from [<bf014280>] (cinergyt2_submit_stream_urb+0x4c/0xa4 [cinergyT2]) r7:c067e1d8 r6:00000000 r5:c067e000 r4:c067e000 [<bf014234>] (cinergyt2_submit_stream_urb+0x0/0xa4 [cinergyT2]) from [<bf0143f4>] (cinergyt2_start_stream_xfer+0x24/0xa0 [cinergyT2]) r4:c067e000 [<bf0143d0>] (cinergyt2_start_stream_xfer+0x0/0xa0 [cinergyT2]) from [<bf014590>] (cinergyt2_start_feed+0x58/0x7c [cinergyT2]) r7:c067e1d8 r6:00000000 r5:c067e1e8 r4:c067e000 [<bf014538>] (cinergyt2_start_feed+0x0/0x7c [cinergyT2]) from [<bf003f94>] (dmx_section_feed_start_filtering+0x114/0x19c [dvb_core]) r6:00000000 r5:c067e000 r4:c8900000 [<bf003e80>] (dmx_section_feed_start_filtering+0x0/0x19c [dvb_core]) from [<bf0016e8>] (dvb_dmxdev_filter_start+0x294/0x47c [dvb_core]) r8:c067e230 r7:c8a15004 r6:00000000 r5:c8a15000 r4:00000000 [<bf001454>] (dvb_dmxdev_filter_start+0x0/0x47c [dvb_core]) from [<bf001adc>] (dvb_demux_do_ioctl+0x20c/0x478 [dvb_core]) [<bf0018d0>] (dvb_demux_do_ioctl+0x0/0x478 [dvb_core]) from [<bf0001b0>] (dvb_usercopy+0xe4/0x170 [dvb_core]) [<bf0000cc>] (dvb_usercopy+0x0/0x170 [dvb_core]) from [<bf000e40>] (dvb_demux_ioctl+0x1c/0x28 [dvb_core]) [<bf000e24>] (dvb_demux_ioctl+0x0/0x28 [dvb_core]) from [<c009e6f0>] (vfs_ioctl+0x7c/0x98) [<c009e674>] (vfs_ioctl+0x0/0x98) from [<c009e9d4>] (do_vfs_ioctl+0x2c8/0x2e8) r6:bedf6b9c r5:c77d1240 r4:c648ee70 [<c009e70c>] (do_vfs_ioctl+0x0/0x2e8) from [<c009ea34>] (sys_ioctl+0x40/0x64) r9:c5ae2000 r8:c0028c28 r6:403c6f2b r5:bedf6b9c r4:00000004 [<c009e9f4>] (sys_ioctl+0x0/0x64) from [<c0028a80>] (ret_fast_syscall+0x0/0x2c) r7:00000036 r6:00000000 r5:0001a2f4 r4:bedf74fc Code: 9a000001 e15c0003 3a000001 e3a03000 (e5833000) ---[ end trace ed5fadb8ba4b59e4 ]--- At this point the serial console becomes a one way connection, I get output but it doesn't take input anymore. ssh logins to the box are still possible and also init 6 works and the box does a clean reboot. Additional information: the Cinergy works fine when attached to my AMD64 Desktop running debian etch and the debian kernel 2.6.18-6-amd64 it also works on my NSLU2 NAS running debian etch for ARM and kernel 2.6.18-6-ixp4xx I tried to compile this debian kernel for the Linkstation but it did not boot... will try to find out what's wrong but would rather use the vanilla kernel. I hope I gathered all needed informations to help me fix this problem. Greetings Ingo _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb