From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752334Ab0DKRBh (ORCPT ); Sun, 11 Apr 2010 13:01:37 -0400 Received: from mail-pz0-f204.google.com ([209.85.222.204]:50014 "EHLO mail-pz0-f204.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752018Ab0DKRBg convert rfc822-to-8bit (ORCPT ); Sun, 11 Apr 2010 13:01:36 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=DBssNtKYZJRNJ1SIIqPsoz6C5KzZjRcNUbBfbpBe00Ppe4hUvFkZ8LVqzne2Gd2+uO PuBeqS7aPc3iYrTJi3BxWsNsHCXmVQyeMEJK5Gzz5Kh8+ez/3lub9Gu8OZnvKZd7eknS v9LRqu9c0YKSAdIwmIm7anTIhKrULqmYelsiQ= MIME-Version: 1.0 In-Reply-To: <20100411164248.GA1998@elf.ucw.cz> References: <20100411072625.GA9926@elf.ucw.cz> <20100411164248.GA1998@elf.ucw.cz> Date: Sun, 11 Apr 2010 10:01:34 -0700 X-Google-Sender-Auth: 90a73a67e8f243bf Message-ID: Subject: Re: staging: udlfb -- staging version does not work, external does From: Bernie Thompson To: Pavel Machek Cc: roberto@unbit.it, gregkh@suse.de, Cyril Hrubis , kernel list Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Pavel, There are two separate issues you're discussing. Can you check the lockup issue with the git.plugable.com code? Thanks, Bernie On Sun, Apr 11, 2010 at 9:42 AM, Pavel Machek wrote: > 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 >