[1.] One line summary of the problem: 093a:2460 Webcam (Pixart PAC207BCA) - inverted LED logic
[2.] Full description of the problem/report: The LED on this webcam is always turned on when connected to USB, unless some application uses it - the behavior that is opposite to what is expected. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/525959 The problem persists on all versions of Ubuntu I've tested. [3.] Keywords (i.e., modules, networking, kernel): Please note, Kernel.org uses a different keyword system then the Ubuntu Tags system. gspca, pac207, 093a:2460, Pixart PAC207BCA [4.] Kernel version (from /proc/version): Linux version 3.2.0-32-generic-pae (buildd@roseapple) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #51-Ubuntu SMP Wed Sep 26 21:54:23 UTC 2012 [5.] Output of Oops.. message (if applicable) with symbolic information resolved (see Documentation/oops-tracing.txt) NA [6.] A small shell script or example program which triggers the problem (if possible) NA [7.] Environment Description: Ubuntu 12.04.1 LTS Release: 12.04 [7.1.] Software (add the output of the ver_linux script here) Linux yuri-desktop 3.2.0-32-generic-pae #51-Ubuntu SMP Wed Sep 26 21:54:23 UTC 2012 i686 i686 i386 GNU/Linux Gnu C 4.6 Gnu make 3.81 binutils 2.22 util-linux 2.20.1 mount support module-init-tools 3.16 e2fsprogs 1.42 pcmciautils 018 Linux C Library 2.15 Dynamic linker (ldd) 2.15 Procps 3.2.8 Net-tools 1.60 Kbd 1.15.2 Sh-utils 8.13 wireless-tools 30 Modules Loaded rfcomm bnep bluetooth binfmt_misc dm_crypt snd_hda_codec_hdmi gspca_pac207 gspca_main videodev snd_hda_codec_realtek ppdev eeepc_wmi asus_wmi sparse_keymap snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq nvidia parport_pc snd_timer wmi snd_seq_device snd serio_raw mac_hid soundcore snd_page_alloc mei lp parport vesafb usbhid hid r8169 pata_via video [7.2.] Processor information (from /proc/cpuinfo): processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz stepping : 7 microcode : 0x28 cpu MHz : 1600.000 cache size : 6144 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 6622.34 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz stepping : 7 microcode : 0x28 cpu MHz : 1600.000 cache size : 6144 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 4 apicid : 2 initial apicid : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 6622.22 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz stepping : 7 microcode : 0x28 cpu MHz : 1600.000 cache size : 6144 KB physical id : 0 siblings : 4 core id : 2 cpu cores : 4 apicid : 4 initial apicid : 4 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 6622.21 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 42 model name : Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz stepping : 7 microcode : 0x28 cpu MHz : 1600.000 cache size : 6144 KB physical id : 0 siblings : 4 core id : 3 cpu cores : 4 apicid : 6 initial apicid : 6 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 6622.21 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: [7.3.] Module information (from /proc/modules): rfcomm 38139 0 - Live 0x00000000 bnep 17830 2 - Live 0x00000000 bluetooth 158438 10 rfcomm,bnep, Live 0x00000000 binfmt_misc 17292 1 - Live 0x00000000 dm_crypt 22528 0 - Live 0x00000000 snd_hda_codec_hdmi 31775 4 - Live 0x00000000 gspca_pac207 13275 0 - Live 0x00000000 gspca_main 27654 1 gspca_pac207, Live 0x00000000 videodev 86588 1 gspca_main, Live 0x00000000 snd_hda_codec_realtek 174313 1 - Live 0x00000000 ppdev 12849 0 - Live 0x00000000 eeepc_wmi 12949 0 - Live 0x00000000 asus_wmi 19624 1 eeepc_wmi, Live 0x00000000 sparse_keymap 13658 1 asus_wmi, Live 0x00000000 snd_hda_intel 32765 5 - Live 0x00000000 snd_hda_codec 109562 3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel, Live 0x00000000 snd_hwdep 13276 1 snd_hda_codec, Live 0x00000000 snd_pcm 80845 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec, Live 0x00000000 snd_seq_midi 13132 0 - Live 0x00000000 snd_rawmidi 25424 1 snd_seq_midi, Live 0x00000000 snd_seq_midi_event 14475 1 snd_seq_midi, Live 0x00000000 snd_seq 51567 2 snd_seq_midi,snd_seq_midi_event, Live 0x00000000 nvidia 10235966 41 - Live 0x00000000 (P) parport_pc 32114 1 - Live 0x00000000 snd_timer 28931 2 snd_pcm,snd_seq, Live 0x00000000 wmi 18744 1 asus_wmi, Live 0x00000000 snd_seq_device 14172 3 snd_seq_midi,snd_rawmidi,snd_seq, Live 0x00000000 snd 62064 20 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device, Live 0x00000000 serio_raw 13027 0 - Live 0x00000000 mac_hid 13077 0 - Live 0x00000000 soundcore 14635 1 snd, Live 0x00000000 snd_page_alloc 14108 2 snd_hda_intel,snd_pcm, Live 0x00000000 mei 36570 0 - Live 0x00000000 (C) lp 17455 0 - Live 0x00000000 parport 40930 3 ppdev,parport_pc,lp, Live 0x00000000 vesafb 13516 1 - Live 0x00000000 usbhid 41906 0 - Live 0x00000000 hid 77367 1 usbhid, Live 0x00000000 r8169 56321 0 - Live 0x00000000 pata_via 13428 0 - Live 0x00000000 video 19068 0 - Live 0x00000000 [7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem) 0000-0cf7 : PCI Bus 0000:00 0000-001f : dma1 0020-0021 : pic1 0040-0043 : timer0 0050-0053 : timer1 0060-0060 : keyboard 0064-0064 : keyboard 0070-0077 : rtc0 0080-008f : dma page reg 00a0-00a1 : pic2 00c0-00df : dma2 00f0-00ff : fpu 0200-020f : pnp 00:05 0290-029f : pnp 00:08 0378-037a : parport0 03c0-03df : vesafb 03f8-03ff : serial 0400-0453 : pnp 00:05 0400-0403 : ACPI PM1a_EVT_BLK 0404-0405 : ACPI PM1a_CNT_BLK 0408-040b : ACPI PM_TMR 0410-0415 : ACPI CPU throttle 0420-042f : ACPI GPE0_BLK 0450-0450 : ACPI PM2_CNT_BLK 0454-0457 : pnp 00:07 0458-047f : pnp 00:05 04d0-04d1 : pnp 00:0a 0500-057f : pnp 00:05 0680-069f : pnp 00:05 0cf8-0cff : PCI conf1 0d00-ffff : PCI Bus 0000:00 164e-164f : pnp 00:05 c000-cfff : PCI Bus 0000:05 c000-c0ff : 0000:05:00.0 c000-c0ff : r8169 d000-dfff : PCI Bus 0000:03 d000-d00f : 0000:03:00.0 d000-d00f : pata_via d010-d013 : 0000:03:00.0 d010-d013 : pata_via d020-d027 : 0000:03:00.0 d020-d027 : pata_via d030-d033 : 0000:03:00.0 d030-d033 : pata_via d040-d047 : 0000:03:00.0 d040-d047 : pata_via e000-efff : PCI Bus 0000:01 e000-e07f : 0000:01:00.0 f000-f01f : 0000:00:1f.3 f020-f02f : 0000:00:1f.5 f020-f02f : ata_piix f030-f03f : 0000:00:1f.5 f030-f03f : ata_piix f040-f043 : 0000:00:1f.5 f040-f043 : ata_piix f050-f057 : 0000:00:1f.5 f050-f057 : ata_piix f060-f063 : 0000:00:1f.5 f060-f063 : ata_piix f070-f077 : 0000:00:1f.5 f070-f077 : ata_piix f080-f08f : 0000:00:1f.2 f080-f08f : ata_piix f090-f09f : 0000:00:1f.2 f090-f09f : ata_piix f0a0-f0a3 : 0000:00:1f.2 f0a0-f0a3 : ata_piix f0b0-f0b7 : 0000:00:1f.2 f0b0-f0b7 : ata_piix f0c0-f0c3 : 0000:00:1f.2 f0c0-f0c3 : ata_piix f0d0-f0d7 : 0000:00:1f.2 f0d0-f0d7 : ata_piix ffff-ffff : pnp 00:05 ffff-ffff : pnp 00:05 00000000-0000ffff : reserved 00010000-0009ebff : System RAM 0009ec00-0009ffff : reserved 000a0000-000bffff : PCI Bus 0000:00 000a0000-000bffff : Video RAM area 000c0000-000c7fff : Video ROM 000d0000-000d3fff : PCI Bus 0000:00 000d4000-000d7fff : PCI Bus 0000:00 000d8000-000dbfff : PCI Bus 0000:00 000dc000-000dffff : PCI Bus 0000:00 000e0000-000fffff : reserved 000e0000-000e3fff : PCI Bus 0000:00 000e4000-000e7fff : PCI Bus 0000:00 000f0000-000fffff : System ROM 00100000-de948fff : System RAM 01000000-015af13b : Kernel code 015af13c-0187627f : Kernel data 01936000-01a0efff : Kernel bss de949000-df13bfff : reserved df13c000-df38dfff : ACPI Non-volatile Storage df38e000-df39bfff : ACPI Tables df39c000-df3bbfff : ACPI Non-volatile Storage df3bc000-df3c0fff : ACPI Tables df3c1000-df403fff : ACPI Non-volatile Storage df404000-df7fffff : System RAM df800000-dfffffff : RAM buffer e0000000-feafffff : PCI Bus 0000:00 e0000000-ebffffff : PCI Bus 0000:01 e0000000-e7ffffff : 0000:01:00.0 e8000000-ebffffff : 0000:01:00.0 e9000000-e94fffff : vesafb ec100000-ec1fffff : PCI Bus 0000:05 ec100000-ec103fff : 0000:05:00.0 ec100000-ec103fff : r8169 ec104000-ec104fff : 0000:05:00.0 ec104000-ec104fff : r8169 ec200000-ec200fff : pnp 00:0e f4000000-f60fffff : PCI Bus 0000:01 f4000000-f5ffffff : 0000:01:00.0 f4000000-f5ffffff : nvidia f6000000-f607ffff : 0000:01:00.0 f6080000-f6083fff : 0000:01:00.1 f6080000-f6083fff : ICH HD audio f6100000-f61fffff : PCI Bus 0000:04 f6100000-f6107fff : 0000:04:00.0 f6100000-f6107fff : xhci_hcd f6200000-f62fffff : PCI Bus 0000:03 f6200000-f620ffff : 0000:03:00.0 f6300000-f6303fff : 0000:00:1b.0 f6300000-f6303fff : ICH HD audio f6305000-f63050ff : 0000:00:1f.3 f6306000-f63063ff : 0000:00:1d.0 f6306000-f63063ff : ehci_hcd f6307000-f63073ff : 0000:00:1a.0 f6307000-f63073ff : ehci_hcd f630a000-f630a00f : 0000:00:16.0 f630a000-f630a00f : mei f8000000-fbffffff : PCI MMCONFIG 0000 [bus 00-3f] f8000000-fbffffff : reserved f8000000-fbffffff : pnp 00:0e fec00000-fec00fff : reserved fec00000-fec003ff : IOAPIC 0 fed00000-fed03fff : reserved fed00000-fed003ff : HPET 0 fed10000-fed17fff : pnp 00:0e fed18000-fed18fff : pnp 00:0e fed19000-fed19fff : pnp 00:0e fed1c000-fed1ffff : reserved fed1c000-fed1ffff : pnp 00:0e fed20000-fed3ffff : pnp 00:0e fed40000-fed44fff : pnp 00:01 fed45000-fed8ffff : pnp 00:0e fed90000-fed93fff : pnp 00:0e fee00000-fee00fff : Local APIC fee00000-fee00fff : reserved ff000000-ffffffff : reserved ff000000-ffffffff : pnp 00:0e 100000000-11effffff : System RAM 11f000000-11fffffff : RAM buffer [7.5.] PCI information ('lspci -vvv' as root) See the attached file lspci -vvv.txt [7.6.] SCSI information (from /proc/scsi/scsi) Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: WDC WD5000AAKX-0 Rev: 15.0 Type: Direct-Access ANSI SCSI revision: 05 Host: scsi1 Channel: 00 Id: 00 Lun: 00 Vendor: TSSTcorp Model: CDDVDW SH-222AB Rev: SB00 Type: CD-ROM ANSI SCSI revision: 05 Host: scsi2 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: ST3500410AS Rev: CC31 Type: Direct-Access ANSI SCSI revision: 05 Host: scsi4 Channel: 00 Id: 01 Lun: 00 Vendor: ATA Model: WDC WD1600JB-00R Rev: 20.0 Type: Direct-Access ANSI SCSI revision: 05 [7.7.] Other information that might be relevant to the problem (please look in /proc and include all information that you think to be relevant): NA [X.] Other notes, patches, fixes, workarounds: Suggested solution: The driver for this camera is gspca_pac207 (located at /lib/modules/ 2.6.31- 19-generic/ kernel/ drivers/ media/video/ gspca). In the driver source file pac207.c it can be seen that the bit 1 of the register at 0x41 controls the LED. Looks like it was assumed that '0' at this bit turns the light off, when actually '1' does that. After I've changed the value of this register to the opposite, the re-compiled driver works correctly and the LED is on only when the camera is in use. I've attached the modified pac207.c. The diff of the changed file vs. original is below: 272c272 change: pac207_ write_reg( gspca_dev, 0x41, 0x00); to: pac207_ write_reg( gspca_dev, 0x41, 0x02); 308c308 change: mode = 0x02; /* Image Format (Bit 0), LED (1), Compr. test mode (2) */ to: mode = 0x00; /* Image Format (Bit 0), LED (1), Compr. test mode (2) */ 331c331 change: pac207_ write_reg( gspca_dev, 0x41, 0x00); /* Turn of LED */ to: pac207_ write_reg( gspca_dev, 0x41, 0x02); /* Turn off LED */ ** Attachment added: "lspci -vvv.txt" https://bugs.launchpad.net/bugs/525959/+attachment/3441242/+files/lspci%20-vvv.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/525959 Title: 093a:2460 Webcam (Pixart PAC207BCA) - inverted LED logic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/525959/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
