On Apr 18, 2011, at 11:06 PM, Vincent McIntyre wrote: > Hi list, > > I just (2011-04-19) upgraded to the current media_build with build.sh > commit bcfdefe9f4538abf12fca1cdb631c80e3d598026 > Author: Mauro Carvalho Chehab <mchehab@nehalem.(none)> > Date: Sun Apr 17 08:21:25 2011 -0300 > and hit a problem. > > I have an Antec case with an LCD screen. It needs the imon driver. > The LCD screen has been working well using media_build from 2011-01-30. > > The imon kernel module now spews this at a high rate: > [ 38.532581] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.544545] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.552548] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.560560] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.568546] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.576557] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.584554] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.592558] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.600533] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.608551] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.620024] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.636034] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.652034] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > > If I stop LCDd > # /etc/init.d/LCDd stop > the spew stops. > > > I'm running on ubuntu 10.04 i386, with lcdproc 0.5.3-0ubuntu2. > $ uname -a > Linux ubuntu 2.6.32-27-generic #49-Ubuntu SMP Wed Dec 1 23:52:12 UTC > 2010 i686 GNU/Linux > $ modinfo imon > filename: /lib/modules/2.6.32-27-generic/kernel/drivers/media/rc/imon.ko > license: GPL > version: 0.9.2 > description: Driver for SoundGraph iMON MultiMedia IR/Display > author: Jarod Wilson <jarod@xxxxxxxxxxxx> > srcversion: 268453AC090EFB24F487BE7 > alias: usb:v15C2p0046d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0045d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0044d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0043d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0042d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0041d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0040d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p003Fd*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p003Ed*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p003Dd*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p003Cd*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p003Bd*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p003Ad*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0039d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0038d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0037d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0036d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0035d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2p0034d*dc*dsc*dp*ic*isc*ip* > alias: usb:v15C2pFFDCd*dc*dsc*dp*ic*isc*ip* > depends: rc-core > vermagic: 2.6.32-27-generic SMP mod_unload modversions 586 > parm: debug:Debug messages: 0=no, 1=yes (default: no) (bool) > parm: display_type:Type of attached display. 0=autodetect, > 1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect) (int) > parm: pad_stabilize:Apply stabilization algorithm to iMON > PAD presses in arrow key mode. 0=disable, 1=enable (default). (int) > parm: nomouse:Disable mouse input device mode when IR device > is open. 0=don't disable, 1=disable. (default: don't disable) (bool) > parm: pad_thresh:Threshold at which a pad push registers as > an arrow key in kbd mode (default: 28) (int) > > The module load looks normal: > $ dmesg|grep imon > [ 4.454786] imon 9-1:1.0: imon_probe: found iMON device (15c2:ffdc, intf0) > [ 4.454794] imon 9-1:1.0: imon_find_endpoints: found IR endpoint > [ 4.454794] imon 9-1:1.0: imon_find_endpoints: found display endpoint > [ 4.472053] imon 9-1:1.0: 0xffdc iMON LCD, MCE IR (id 0x9f) > [ 5.024035] Registered IR keymap rc-imon-mce > [ 5.024173] imon 9-1:1.0: Configuring IR receiver for MCE protocol > [ 5.032117] imon 9-1:1.0: Registering iMON display with sysfs > [ 5.032173] imon 9-1:1.0: iMON device (15c2:ffdc, intf0) on > usb<9:2> initialized > [ 5.032198] usbcore: registered new interface driver imon > > Then the display port is opened... > [ 38.519700] imon 9-1:1.0: display port opened > [ 38.532581] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.544545] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.552548] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.560560] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.568546] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.576557] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > [ 38.584554] imon 9-1:1.0: lcd_write: write 8 bytes to LCD > > I don't have any load options defined for the imon module. Those are almost all dev_dbg spew. This seems relevant: http://www.gossamer-threads.com/lists/linux/kernel/789201 The normal way to enable dev_dbg spew is via some debugfs magic: http://outer-rim.gnu4u.org/?p=38 (see also <kernel source>/Documentation/dynamic-debug-howto.txt) But I also seem to recall that DEBUG may be getting defined somewhere as part of the media_build process, which might be what is enabling that spew in your case. -- Jarod Wilson jarod@xxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
