<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Launching Weston on different tty corrupts original tty"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70876">70876</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>Launching Weston on different tty corrupts original tty
</td>
</tr>
<tr>
<th>Severity</th>
<td>critical
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ullysses.a.eoff@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>weston
</td>
</tr>
<tr>
<th>Product</th>
<td>Wayland
</td>
</tr></table>
<p>
<div>
<pre>When executing weston from a console tty and instructing it to launch on a
different tty causes the original tty to be corrupted. That is, the original
tty's command-line echos garbled characters when attempting to type in it after
shutting down weston. Moreover, while weston is running, vt-switching no
longer works. One must use 'chvt' from an ssh session to force a vt switch.
1. Start a new console/tty session, say, on tty2 (e.g. <ctrl>+<alt>+<F2>)
2. Execute 'weston --tty=3' (as root/suid)
* Weston should now be active and running
3. Attempt to vt-switch back to tty2 (or any other tty)
* Observe that vt-switching does not work
4. Exit weston with <ctrl>+<alt>+<backspace>
* Observe that display/screen does not return to a text console and
vt-switching is still not working; screen goes blank
5. Start an ssh session to the misbehaving weston device
6. Execute 'sudo chvt 2'
* Observe the original console/tty2 session activates
7. Try typing into the console
* Observe garbled characters echo to the screen and vt-switching is not
working
wayland (master) heads/master-0-g16b2dab
drm (master) 2.4.47-0-g951ebe0
mesa (master) heads/master-0-g64c081e
libva (master) heads/master-0-g73a11b3
intel-driver (master) heads/master-0-g01b39f7
weston (master) heads/master-0-gc85f1d4</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>