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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - System hang after screen power saving"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110574">110574</a>
</td>
</tr>
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<th>Summary</th>
<td>System hang after screen power saving
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>XOrg git
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/AMDgpu
</td>
</tr>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>number048@gmail.com
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=144122" name="attach_144122" title="dmesg">attachment 144122</a> <a href="attachment.cgi?id=144122&action=edit" title="dmesg">[details]</a></span>
dmesg
After updating to Xubuntu 19.04 I started having problems with the screen saver
feature. After a request for the monitor to go into power saving mode I am
unable to recover the system. When the monitor turns on again I get the last
image shown but I cannot move the cursor, nothing on the screen is moving,
everything is frozen and I cannot use ssh to access the machine.
Later I discovered that I could access the computer using ssh before I let the
monitor enter power saving mode and I was then able to save a copy of dmesg.
As soon as the monitor is turned off by the system the crash happens:
[ 2674.166451] general protection fault: 0000 [#1] SMP NOPTI
...
[ 2674.166530] RIP: 0010:dce110_vblank_set+0x4f/0xa0 [amdgpu]
with the last 5 entries of the call trace:
[ 2674.166624] dal_irq_service_set+0x4c/0x90 [amdgpu]
[ 2674.166687] dc_interrupt_set+0x24/0x30 [amdgpu]
[ 2674.166753] dm_enable_vblank+0x2a/0x40 [amdgpu]
[ 2674.166768] drm_vblank_enable+0xe2/0x130 [drm]
[ 2674.166781] drm_vblank_get+0x92/0xb0 [drm]
I was using the Oibaf PPA both before and after I updated to Xubuntu 19.04.
I tried to use the kernel v5.1-rc7 from the Ubuntu mainline:
<a href="https://kernel.ubuntu.com/~kernel-ppa/mainline/">https://kernel.ubuntu.com/~kernel-ppa/mainline/</a>
My linux command line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.cik_support=0
amdgpu.cik_support=1 amdgpu.dc=1"</pre>
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