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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 - PSR screen freeze"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91436">91436</a>
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<th>Summary</th>
<td>PSR screen freeze
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>XOrg git
</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
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>ivan.mitev@gmail.com
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=117306" name="attach_117306" title="dmesg, booting undocked on bat, PSR=1, FBC=0">attachment 117306</a> <a href="attachment.cgi?id=117306&action=edit" title="dmesg, booting undocked on bat, PSR=1, FBC=0">[details]</a></span>
dmesg, booting undocked on bat, PSR=1, FBC=0
Enabling PSR -> screen freezes at boot a bit after modesetting, but not exactly
at modesetting since the resolution is changed to a high one and I can see
graphics.
Hardware: lenovo T450s, model 20BX000TBM (see attached dmidecode and lspci_vv).
OS: Fedora 22, fully updated (as of 2015-07-23)
Kernel: git drm-intel-nightly (as of 2015-07-22 evening). .config attached
(config.drm-intel).
Tests (attached dmesg -c > ...):
dmesg-boot_undocked_psr0_fbc1:
- boot with laptop undocked (but on AC), enable_psr=0, enable_psr=1
- laptop seems to work fine
dmesg-boot_undocked_psr1_fbc0:
- boot with laptop undocked (but on AC), enable_psr=1, enable_psr=0
- screen freezes at encrypted luks password (fedora's lock image shows up, with
the password field, but there's no screen feedback to keyboard events).
- laptop is responsive though, so I can blindly switch to a vt, log as root,
and dump dmesg to a file.
dmesg-0-boot_undocked_bat_psr1_fbc0:
- boot with laptop undocked (on battery), enable_psr=1, enable_psr=0
- same behavior as on AC (boot_undocked_psr1_fbc0).
dmesg-0-boot_undocked_bat_psr1_fbc0-after-suspend: I thought of another test:
blindly suspended laptop, resumed, and laptop's panel is now OK and laptop is
usable</pre>
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</p>
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