cx8800/cx88xx and kernel 4.x

milomak · 06-15-2015, 05:54 PM

i have the leadtek winfast tv2000xp expert tv card. it uses the cx8800/xx drivers.

when i install a v4 kernel, when the de loads up a screeching sound starts. this doesn't happen on the v3.17 kernel i am currently running.

when i blacklist these modules, the screeching sound doesn't happen.

what else can i provide as diagnostics?

Keruskerfuerst · 06-16-2015, 12:11 PM

kernel config
lsmod

milomak · 06-18-2015, 04:40 PM

kernel config

Code:

$ cat /boot/config-4.0-5.dmz.3-liquorix-amd64 | grep CX88
CONFIG_VIDEO_CX88=m
CONFIG_VIDEO_CX88_ALSA=m
CONFIG_VIDEO_CX88_BLACKBIRD=m
CONFIG_VIDEO_CX88_DVB=m
CONFIG_VIDEO_CX88_ENABLE_VP3054=y
CONFIG_VIDEO_CX88_VP3054=m
CONFIG_VIDEO_CX88_MPEG=m

and

Code:

$ cat /boot/config-3.17-4.dmz.2-liquorix-amd64  | grep CX88
CONFIG_VIDEO_CX88=m
CONFIG_VIDEO_CX88_ALSA=m
CONFIG_VIDEO_CX88_BLACKBIRD=m
CONFIG_VIDEO_CX88_DVB=m
CONFIG_VIDEO_CX88_ENABLE_VP3054=y
CONFIG_VIDEO_CX88_VP3054=m
CONFIG_VIDEO_CX88_MPEG=m

which is working

lsmod kernel 3

Code:

$ lsmod | grep cx88
cx8800                 31477  0 
cx88xx                 80236  1 cx8800
btcx_risc               4192  2 cx8800,cx88xx
tveeprom               14712  1 cx88xx
videobuf_dma_sg        10902  2 cx8800,cx88xx
rc_core                20852  3 cx88xx,rc_winfast
v4l2_common             7249  3 tuner,cx8800,cx88xx
videodev              148569  6 tuner,cx8800,cx88xx,gspca_main,v4l2_common,gspca_zc3xx
videobuf_core          19391  3 videobuf_dma_sg,cx8800,cx88xx
i2c_algo_bit            5789  2 cx88xx,nvidiafb
i2c_core               44594  16 drm,i2c_i801,tuner,tda8290,tda9887,tea5767,i2c_algo_bit,cx8800,cx88xx,fb_ddc,nvidia,v4l2_common,tveeprom,tuner_simple,videodev,nvidiafb

lsmod kernel 4

Code:

$ lsmod | grep cx88
cx8800                 27673  0 
cx88xx                 80070  1 cx8800
tveeprom               15352  1 cx88xx
videobuf2_dma_sg        8585  1 cx8800
rc_core                20973  3 cx88xx,rc_winfast
videobuf2_core         40166  2 cx8800,cx88xx
v4l2_common             5573  4 tuner,cx8800,cx88xx,videobuf2_core
videodev              146932  7 tuner,cx8800,cx88xx,gspca_main,v4l2_common,videobuf2_core,gspca_zc3xx
i2c_algo_bit            5846  2 cx88xx,nvidiafb
i2c_core               45327  16 drm,i2c_i801,tuner,tda8290,tda9887,tea5767,i2c_algo_bit,cx8800,cx88xx,fb_ddc,nvidia,v4l2_common,tveeprom,tuner_simple,videodev,nvidiafb

milomak · 06-18-2015, 04:53 PM

This may be a clue. Looking at the list below it seems btcx_risc and videobuf_core are not loaded modules

Code:

# cat /boot/config-3.17-4.dmz.2-liquorix-amd64 | grep BTC
CONFIG_ATH9K_BTCOEX_SUPPORT=y
CONFIG_RTLBTCOEXIST=m
CONFIG_VIDEO_BTCX=m

Code:

# cat /boot/config-4.0-5.dmz.3-liquorix-amd64 | grep BTC
CONFIG_ATH9K_BTCOEX_SUPPORT=y
CONFIG_RTLBTCOEXIST=m

so the video option missing. which is interesting because using the latest 4 kernel, the problem starts when i launch tvtime.

and

Code:

# cat /boot/config-3.17-4.dmz.2-liquorix-amd64 | grep VIDEOBUF
CONFIG_VIDEOBUF_GEN=m
CONFIG_VIDEOBUF_DMA_SG=m
CONFIG_VIDEOBUF_VMALLOC=m
CONFIG_VIDEOBUF_DVB=m
CONFIG_VIDEOBUF2_CORE=m
CONFIG_VIDEOBUF2_MEMOPS=m
CONFIG_VIDEOBUF2_DMA_CONTIG=m
CONFIG_VIDEOBUF2_VMALLOC=m
CONFIG_VIDEOBUF2_DMA_SG=m
CONFIG_VIDEOBUF2_DVB=m

Code:

# cat /boot/config-4.0-5.dmz.3-liquorix-amd64 | grep VIDEOBUF
CONFIG_VIDEOBUF_GEN=m
CONFIG_VIDEOBUF_DMA_SG=m
CONFIG_VIDEOBUF_VMALLOC=m
CONFIG_VIDEOBUF_DVB=m
CONFIG_VIDEOBUF2_CORE=m
CONFIG_VIDEOBUF2_MEMOPS=m
CONFIG_VIDEOBUF2_DMA_CONTIG=m
CONFIG_VIDEOBUF2_VMALLOC=m
CONFIG_VIDEOBUF2_DMA_SG=m
CONFIG_VIDEOBUF2_DVB=m

milomak · 09-02-2015, 05:50 PM

would this kin d of thing be a policy change in kernel 4 around the cx88 module?