My only suggestion is that you may have to go through the on-screen menus of the monitor to actually enable control from the USB side -- we've seen devices that do need some sort of "magic sequence" to enable them, and they report no errors when not enabled. It's possible that this switch may be on the menus somewhere.
Matt On Wed, Dec 19, 2001 at 09:39:32PM +0100, Flavio Stanchina wrote: > On Wednesday 19 December 2001 11:45, Brad Hards wrote: > > > > I've managed to retrieve all the information from the monitor, but > > BTW: Congratulations on making some progress. I don't think anyone else > > has done this. > > That's certainly for lack of interest from competent people, it was very > easy to get there once I had the specs. Nothing to be proud of. > > > > Note that HIDIOCSREPORT reports success even if I open the device node > > > with O_RDONLY as a normal user. Is this the intended behaviour? Maybe > > > it doesn't *really* try to write to the device? > > Entirely possible. Setting reports probably hasn't been tested before. > > Try tracing out the flow with a lot of printk()s or maybe a kernel > > debugger. > > I have made some minor changes to hiddev.c and hid-core.c to make > hid_write_report() (and thus HIDIOCSREPORT) return a meaningful error, > but that didn't make any difference (it didn't crash either ;) > > As far as I was able to see with some printk's, everything in the > HIDIOCSREPORT path up to and including usb_submit_urb() gets called and > returns success, but I still don't see any change on the monitor. > > I didn't try to trace through urb->dev->bus->op->submit_urb(urb) in > usb_submit_urb() because 1) it's not likely that the problem lies further > down that path, 2) I need USB for my mouse and printer to work and it's > already enough of a PITA to unload/reload hid.o in the middle of a > session, not to mention that I also hit an oops while doing so (I think > it's a devfs problem). > > In short, I don't have the time and resources to look deeper into the > kernel side of this thing, but anyway I suspect the problem lies > elsewhere, like having to send something more involved to the monitor. > I hope I will have the time to install the provided software on The Other > Operating System and trace what it's sending to the monitor. > > Any suggestion is welcome... > > -- > Ciao, > Flavio Stanchina > Trento - Italy > > "The best defense against logic is ignorance." > http://spazioweb.inwind.it/fstanchina/ > > _______________________________________________ > [EMAIL PROTECTED] > To unsubscribe, use the last form field at: > https://lists.sourceforge.net/lists/listinfo/linux-usb-users -- Matthew Dharm Home: [EMAIL PROTECTED] Maintainer, Linux USB Mass Storage Driver You should try to see the techs say "three piece suit". -- The Chief User Friendly, 11/23/1997
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