On Sat, 2006-04-29 at 21:13 +0100, Tim Southerwood wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi all, > > Slight problem I'd be grateful for some advice on, please. > > On linux 2.6.15 (k7 debian build), debian testing, with mythtv 0.19, and > Nebula DVB-T card: > > I'm getting a load of these (upto 10's or more per second, spasmodically): > > bt878(0): irq PPERR risc_pc=13cfb040 > bt878(0): irq PPERR risc_pc=13cfb040 > bt878(0): irq PPERR risc_pc=13cfb040 > > eventually culminating in: > > bt878(0): IRQ lockup, cleared int mask > > and sometimes, an irq disabled message. > > At this point, the DVB card becomes unresponsive, though unloading and > reloading the appropriate drivers often clears it. > > Am I right in thing the PPERR is a PCI parity error and is indicative of > a dodgey card, mobo or incompatability between the two? You are right in thinking it is a parity error. My guess would be that the cause is a bad connection somewhere. Did you try unpluging the card, sticking it in another slot or something like that? Perhaps clean the connectors? > > I've tried various BIOS settings including taking the PCI (and FSB) down > to 100MHz. PC is normally (until I added the Nebula card) rock solid and > stable - it is my general purpose server with 4 disks so it works quite > hard. > > I can generate extra PPERR messages at will by loading the hard disks > (eg dd /dev/hda to /dev/null). Which is why I'm thinking hardware. > > When the system works, it works very well - then bang! > > Also, please excuse me for being thick, but - the error apparantly > relates to the BT878 capture. I'm using DVB only, not the analogue video > capture device - Myth is not configured to open that device, so I;m a > bit confused why the bt878 drive should be whining? The bt878 chip is used as pci bridge for the dvb function of this card. The dvb transport stream is presented to the bt878 as a digital audio capture and it's up to the driver to understand that it is actually dvb data. Regards Sigmund > > I've also tried unloading the USB and audio drivers that share the same > IRQ - no change. > > Any thoughts most appreciated :) > > Best wishes > > Tim Southerwood > > ============================================ > System details follow: > > Hardware in brief: > Abit KG7-RAID mobo with Athlon XP 1800 CPU, PCI and RAM running at > 133MHz, 2 e100 NICS, 4 PATA disks, sound card (not used at present) > > lspci: > 0000:00:00.0 Host bridge: Advanced Micro Devices [AMD] AMD-760 [IGD4-1P] > System Controller (rev 13) > 0000:00:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-760 [IGD4-1P] > AGP Bridge > 0000:00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super > South] (rev 40) > 0000:00:07.1 IDE interface: VIA Technologies, Inc. > VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) > 0000:00:07.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB > 1.1 Controller (rev 16) > 0000:00:07.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB > 1.1 Controller (rev 16) > 0000:00:07.4 SMBus: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] > (rev 40) > 0000:00:08.0 Multimedia audio controller: Ensoniq ES1370 [AudioPCI] (rev 01) > 0000:00:0b.0 Multimedia video controller: Brooktree Corporation Bt878 > Video Capture (rev 11) > 0000:00:0b.1 Multimedia controller: Brooktree Corporation Bt878 Audio > Capture (rev 11) > 0000:00:11.0 PCI bridge: Digital Equipment Corporation DECchip 21152 > (rev 03) > 0000:00:13.0 Mass storage controller: Triones Technologies, Inc. > HPT366/368/370/370A/372/372N (rev 04) > 0000:01:05.0 VGA compatible controller: nVidia Corporation NV4 [RIVA > TNT] (rev 04) > 0000:02:04.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet > Pro 100] (rev 05) > 0000:02:05.0 Ethernet controller: Intel Corporation 82557/8/9 [Ethernet > Pro 100] (rev 05) > > lsmod: > Module Size Used by > lp 10628 0 > usblp 11648 0 > uhci_hcd 28304 0 > dvb_bt8xx 13892 12 > mt352 6020 1 dvb_bt8xx > dvb_pll 10628 1 dvb_bt8xx > sp887x 7108 1 dvb_bt8xx > dst_ca 11712 1 dvb_bt8xx > dst 20804 2 dvb_bt8xx,dst_ca > bt878 9720 2 dvb_bt8xx,dst > bttv 151888 2 dvb_bt8xx,bt878 > video_buf 19972 1 bttv > v4l2_common 5696 1 bttv > btcx_risc 4616 1 bttv > tveeprom 13840 1 bttv > videodev 8832 1 bttv > dvb_core 72744 2 dvb_bt8xx,dst_ca > cx24110 7172 1 dvb_bt8xx > or51211 8836 1 dvb_bt8xx > firmware_class 9984 4 dvb_bt8xx,sp887x,bttv,or51211 > nxt6000 6724 1 dvb_bt8xx > nfsd 208132 13 > lockd 55752 2 nfsd > nfs_acl 3392 1 nfsd > sunrpc 134332 9 nfsd,lockd,nfs_acl > autofs4 17028 4 > ipv6 222976 22 > bridge 45204 0 > xfs 495576 4 > exportfs 5440 2 nfsd,xfs > lgdt330x 7324 1 dvb_bt8xx > psmouse 32516 0 > serio_raw 6596 0 > joydev 8960 0 > gameport 14024 0 > evdev 8896 0 > via686a 15368 0 > i2c_algo_bit 8392 1 bttv > mousedev 10592 0 > i2c_isa 4672 1 via686a > parport_pc 32324 0 > parport 31880 2 lp,parport_pc > amd_k7_agp 8012 1 > agpgart 31496 1 amd_k7_agp > i2c_core 19408 13 > dvb_bt8xx,mt352,sp887x,dst,bttv,tveeprom,cx24110,or51211,nxt6000,lgdt330x,via686a,i2c_algo_bit,i2c_isa > rtc 11508 0 > soundcore 8992 0 > ext2 58760 1 > mbcache 8516 1 ext2 > ide_disk 15936 11 > e100 34884 0 > mii 5248 1 e100 > hpt366 17152 0 [permanent] > usbcore 113924 3 usblp,uhci_hcd > via82cxxx 8260 0 [permanent] > generic 4356 0 [permanent] > ide_core 112928 4 ide_disk,hpt366,via82cxxx,generic > thermal 13512 0 > processor 22976 1 thermal > fan 4676 0 > > cat /proc/interrupts > CPU0 > 0: 7673015 XT-PIC timer > 1: 3380 XT-PIC i8042 > 2: 0 XT-PIC cascade > 3: 1965071 XT-PIC bttv0, bt878, uhci_hcd:usb1, uhci_hcd:usb2 > 8: 4 XT-PIC rtc > 9: 1 XT-PIC acpi > 10: 3826 XT-PIC eth1 > 11: 17997 XT-PIC ide2, ide3 > 12: 933189 XT-PIC eth0 > 14: 23167 XT-PIC ide0 > 15: 5093 XT-PIC ide1 > NMI: 0 > LOC: 0 > ERR: 0 > MIS: 0 > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.2.2 (GNU/Linux) > Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org > > iD8DBQFEU8jnPn7/zeQfFocRAsxVAJsFXeEMvjg1tjF2DcA7FYBbwQnAUACgvems > Gjb6LkoWXttS2N9ArTNnFas= > =lIa1 > -----END PGP SIGNATURE----- > > _______________________________________________ > > linux-dvb@xxxxxxxxxxx > http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb _______________________________________________ linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
