Public bug reported: Binary package hint: linux-image-2.6.20-15-generic
[I have reported this problem upstream to the linux-dvb mailing list. http://www.linuxtv.org/pipermail/linux-dvb/2007-May/018232.html Alas, not a single response there. So this may be specific to the Ubuntu kernel.] Hi, using a Nova-T dvb card, I get the following in /var/log/messages... 22:09:54 kernel: cx88_wakeup: 2 buffers handled (should be 1) 22:09:57 kernel: cx88_wakeup: 2 buffers handled (should be 1) 22:10:06 kernel: cx88_wakeup: 2 buffers handled (should be 1) 22:10:09 kernel: cx88_wakeup: 2 buffers handled (should be 1) 22:10:12 kernel: cx88_wakeup: 2 buffers handled (should be 1) 22:10:15 kernel: cx88_wakeup: 2 buffers handled (should be 1) ...every few seconds while watching TV with xine or other dvb-apps. The event results in a visible interruption of the video stream. Looking on the net for solutions, I found these suggestions: - changing PCI latency in the BIOS settings - putting the card into a different PCI slot - using "pci=routeirq" or "pci=noacpi" kernel boot parameters I tried all these, but it did NOT help. So, where should I look for solutions now? The system is an Intel 965 chipset mainboard, running a default Ubuntu "Feisty" 7.04 with its stock kernel (package 2.6.20-15-generic). The dvb card is fine, it works without these problems with a different mainboard and the same Linux distribution. Hope this info helps: ------------------------------------------ # egrep "CPU|cx88" /proc/interrupts CPU0 CPU1 23: 21861 407216 IO-APIC-fasteoi cx88[0], cx88[0], HDA Intel ------------------------------------------ # lspci -v 07:01.0 Multimedia video controller: Conexant CX23880/1/2/3 PCI Video and Audio Subsystem: Hauppauge computer works Inc. Unknown device 9002 Flags: bus master, medium devsel, latency 64, IRQ 23 Memory at 92000000 (32-bit, non-prefetchable) [size=16M] Capabilities: [44] Vital Product Data Capabilities: [4c] Power Management version 2 07:01.2 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and Audio Decode Subsystem: Hauppauge computer works Inc. Nova-T DVB-T Model 909 Flags: bus master, medium devsel, latency 64, IRQ 23 Memory at 91000000 (32-bit, non-prefetchable) [size=16M] Capabilities: [4c] Power Management version 2 07:01.4 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and Audio Decode Subsystem: Hauppauge computer works Inc. Nova-T DVB-T Model 909 Flags: bus master, medium devsel, latency 64, IRQ 10 Memory at 90000000 (32-bit, non-prefetchable) [size=16M] Capabilities: [4c] Power Management version 2 ------------------------------------------ ** Affects: linux-source-2.6.20 (Ubuntu) Importance: Medium Status: Needs Info -- DVB Nova-T video skips with "cx88_wakeup: 2 buffers handled (should be 1)" https://bugs.launchpad.net/bugs/119115 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
