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Forum: Embedded Applications 08-10-2016, 11:31 PM
Replies: 4
Views: 7,256
Posted By Jim2220
Displaylink as CD reappears after error, might not be cause of error

I believe that the Displaylink CD Drive reconnection occurs AFTER my program
- successfully connects to the 700TSU / Displaylink
- successfully outputs 3 (of 6) small rectangles to the screen
-...
Forum: Embedded Applications 08-06-2016, 05:44 PM
Replies: 4
Views: 7,256
Posted By Jim2220
IOCTL_USB_DISCONNECT, right or wrong track?

A call to this function of libusb in linux.c

int usb_detach_kernel_driver_np(usb_dev_handle *dev, int interface)
{
struct usb_ioctl command;
int ret;

command.ifno = interface;
...
Forum: Embedded Applications 08-05-2016, 11:18 PM
Replies: 4
Views: 7,256
Posted By Jim2220
Perhaps udl is not needed?

If I use
sudo modprobe -r udl
my application still runs and can maintain output to the Xenarc after one second ("Displaylink CD" not present and no Mint hotplug sounds).

Does this mean that udl...
Forum: Embedded Applications 08-05-2016, 10:38 PM
Replies: 4
Views: 7,256
Posted By Jim2220
udl is in the Xenarc

Another clue:
If I boot my desktop PC without the Xenarc then do
lsmod | grep udl
nothing (i.e. no udl module) is there.
sudo modprobe udl
lsmod | grep udl
still nothing is there.

Repeating...
Forum: Embedded Applications 08-05-2016, 05:11 PM
Replies: 4
Views: 7,256
Posted By Jim2220
udl module, essential? comes from where?

I have written a program to output to a Xenarc 700TSU which contains a Displaylink. My program uses libdlo which uses libusb 1.0.20. After booting Linux Mint 17.2 and starting my application Mint...
Forum: Linux and Open Source 07-25-2016, 11:41 PM
Replies: 1
Views: 5,826
Posted By Jim2220
Sound in Xenarc not Displaylink

To answer my own stupid question: I have a Xenarc 700TSU. It contains some flavor of Displaylink circuit but that circuit does not provide the audio functionality of the product. The 700TSU has a...
Forum: Embedded Applications 01-27-2016, 04:14 AM
Replies: 0
Views: 7,604
Posted By Jim2220
Bug fix: dlo_grfx.c function cmd_stripe24 with width exactly 256 pixels

I had a problem calling dlo_copy_host_bmp with a width of exactly 256 bytes. The resulting display had only one line. The line with my comment fixed it.

end = base8 + (BYTES_PER_8BPP * width);...
Forum: Linux and Open Source 12-29-2015, 11:26 PM
Replies: 1
Views: 5,826
Posted By Jim2220
Program sound?

I am looking for any information about how to output sound to a DisplayLink device such as the 700TSU with a C program. "Output" means to play a sound file or even something as simple as making it...
Forum: Linux and Open Source 11-30-2015, 05:42 PM
Replies: 4
Views: 7,062
Posted By Jim2220
Driver is packaged using makeself

Another clue. displaylink-driver-1.0.138.run is a collection of files which includes a canned script that (in my case unsuccessfully) invokes displaylink-installer.sh.
The .run file is created...
Forum: Linux and Open Source 11-30-2015, 01:49 AM
Replies: 4
Views: 7,062
Posted By Jim2220
More output from bash debug

This is additional output using bash -x to obtain more info:

+ MS_Printf ' 100%% '
+ printf ' 100%% '
100% + test xy = xy
+...
Forum: Linux and Open Source 11-18-2015, 03:17 AM
Replies: 4
Views: 7,062
Posted By Jim2220
1: eval: ./displaylink-installer.sh: Permission denied

Attempting to install DisplayLink driver for Xenarc 700TSU on Linux Mint 17.2. Here's what I get including a dump of the kernel version:

fred@fred-desktop ~/JimDisplaylink $ sudo...
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