On Tue, 20 Dec 2005, Fisher Yu wrote: > On 12/20/05, Alan Stern <[EMAIL PROTECTED]> wrote: > > > Is it possible to run your code (or a slightly hacked version of it) with > > the video driver not loaded? You could just write dummy data (zeros) to > > the disk. > > Yes. Actually, I have built in a software encoder simulator who is > just producing data streaming, the simulator is controlled by a MACRO. > I have run this simulator version program many times "in my > computer"(because lack of real hardware at that time, and usb is 1.1), > no problem found. I plan to run this code in real hardware. It needs > many time to validate. > > I'm doing another test now. In this test, the data is saved in a > 'local' IDE disk rather than a USB-IDE disk. If no error occurs in > this test, I think there may be a problem in USB side or a bug in > cooperating between USB and vedio driver? Otherwise, the bug likely > lies in video driver or the application. The testing will last 1 to 2 > days.
That's a good idea. > If I saw "fdisk -l" or "df -l" hang, can I conclude that some file > system data structs have been destroyed? likely I should ask this > question in file system mailing list. :) fdisk doesn't involve the filesystem; it reads the partition table directly from the disk. So problems with fdisk indicate the lower-level drivers aren't working. By contrast, df does involve the filesystem. That's why you sometimes see differing behaviors. Alan Stern ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
