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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - slow switching to KD_GRAPHICS (KMS?)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92982">92982</a>
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<th>Summary</th>
<td>slow switching to KD_GRAPHICS (KMS?)
</td>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Driver/Radeon
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<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
</td>
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<th>Reporter</th>
<td>royvandervegt@gmail.com
</td>
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=119748" name="attach_119748" title="cpu and glxinfo">attachment 119748</a> <a href="attachment.cgi?id=119748&action=edit" title="cpu and glxinfo">[details]</a></span>
cpu and glxinfo
I have been experiencing this problem since late 2013 when I started using
Linux, but I was never able to pinpoint the root cause.
When X starts, it takes a long time (5 - 10 sec) to display the desktop.
Switching from X/Wayland to tty and vice versa also takes the same amount of
time. After the switch is complete everything works fine.
Now I was programming some animations using the framebuffer device (/dev/fb0)
and I was using `ioctl(fd, KDSETMODE, KD_GRAPHICS)` to enable graphics mode
instead of text mode. This also takes 5 - 10 seconds. This might be a good
starting point?
KMS is enabled and also reported as such by X on startup. No special
configurations are in use, everything is vanilla.
System information:
- ATI Mobility Radeon HD5470m (512mb)
- Driver version: xf86-video-ati 1:7.5.0-2, but goes back a long time before
this version
- Kernel: Linux arch 4.2.5-1-ARCH #1 SMP PREEMPT Tue Oct 27 08:13:28 CET 2015
x86_64 GNU/Linux</pre>
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