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Message-ID: <20100411164248.GA1998@elf.ucw.cz> Date: Sun, 11 Apr 2010 18:42:48 +0200 From: Pavel Machek <pavel@....cz> To: Bernie Thompson <bernie@...gable.com> Cc: roberto@...it.it, gregkh@...e.de, Cyril Hrubis <metan@....cz>, kernel list <linux-kernel@...r.kernel.org> Subject: Re: staging: udlfb -- staging version does not work, external does Hi! > Thanks for the bug report! Thanks for trying to solve it :-). > > (I tried testing with cat /bin/bash > /dev/fb1 and cat /dev/fb0 > > > /dev/fb1). > > I don't think redirects like that will work. The fbcon module loads > against one fb, and can only be switch with utilities like "fbset" > > > So I tried > > > > Roberto De Ioris roberto at unbit.it > > Wed Jun 10 08:00:07 PDT 2009 > > It's good to know Roberto's works. This will be a solvable problem. > > OK - this may be this bug (fixed at > http://git.plugable.com/gitphp/index.php?p=udlfb&a=commit&h=ac7f578b51ce5738386b571d096da4d8889c48e0). > Can you try latest udlfb (git clone > http://git.plugable.com/webdav/udlfb ) to see if that's it? I tried with that patch, no change. dmesg from insmod and cat /dev/fb0 > /dev/fb1 attempt are: Apr 11 18:39:02 amd kernel: udlfb: module is from the staging directory, the quality is unknown, you have been warned. Apr 11 18:39:02 amd kernel: udlfb 1-1:1.0: usb_probe_interface Apr 11 18:39:02 amd kernel: udlfb 1-1:1.0: usb_probe_interface - got id Apr 11 18:39:02 amd kernel: usb 1-1: dlfb: allocated 4 65024 byte urbs Apr 11 18:39:02 amd kernel: usb 1-1: dlfb: set_par mode 1024x768 Apr 11 18:39:02 amd kernel: usb 1-1: dlfb: DisplayLink USB device /dev/fb1 attached. 1024x768 resolution. Using 3072K framebuffer memory Apr 11 18:39:02 amd kernel: usbcore: registered new interface driver udlfb Apr 11 18:39:02 amd kernel: VMODES initialized Apr 11 18:39:08 amd kernel: usb 1-1: dlfb: open /dev/fb1 user=1 fb_info=f5087bf0 count=1 Apr 11 18:39:08 amd kernel: usb 1-1: dlfb: release /dev/fb1 user=1 count=0 I tried to play with /dev/fb1 a bit more: root@amd:~# cat /dev/zero > /dev/fb1 cat: write error: No space left on device root@amd:~# cat /dev/fb1 root@amd:~# echo ahoj > /dev/fb1 root@amd:~# cat /dev/fb1 ahoj root@amd:~# ...but still not change on usb connected display, and nothing really interesting in dmesg: Apr 11 18:41:39 amd kernel: usb 1-1: dlfb: open /dev/fb1 user=1 fb_info=f5087bf0 count=1 Apr 11 18:41:40 amd kernel: usb 1-1: dlfb: release /dev/fb1 user=1 count=0 Apr 11 18:41:46 amd kernel: usb 1-1: dlfb: open /dev/fb1 user=1 fb_info=f5087bf0 count=1 Apr 11 18:41:46 amd kernel: usb 1-1: dlfb: release /dev/fb1 user=1 count=0 Apr 11 18:41:51 amd kernel: usb 1-1: dlfb: open /dev/fb1 user=1 fb_info=f5087bf0 count=1 Apr 11 18:41:51 amd kernel: usb 1-1: dlfb: release /dev/fb1 user=1 count=0 Apr 11 18:41:52 amd kernel: usb 1-1: dlfb: open /dev/fb1 user=1 fb_info=f5087bf0 count=1 Apr 11 18:41:53 amd kernel: usb 1-1: dlfb: release /dev/fb1 user=1 count=0 Apr 11 18:41:59 amd kernel: usb 1-1: dlfb: open /dev/fb1 user=1 fb_info=f5087bf0 count=1 Apr 11 18:41:59 amd kernel: usb 1-1: dlfb: release /dev/fb1 user=1 count=0 Apr 11 18:42:01 amd kernel: usb 1-1: dlfb: open /dev/fb1 user=1 fb_info=f5087bf0 count=1 Apr 11 18:42:01 amd kernel: usb 1-1: dlfb: release /dev/fb1 user=1 count=0 -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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