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<body><span class="vcard"><a class="email" href="mailto:albert@weichselbraun.net" title="Albert Weichselbraun <albert@weichselbraun.net>"> <span class="fn">Albert Weichselbraun</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - high system load and mouse delays - pipe A vblank wait timed out"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102711">bug 102711</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Resolution</td>
<td>---
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<td>NOTOURBUG
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - high system load and mouse delays - pipe A vblank wait timed out"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102711#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED NOTOURBUG - high system load and mouse delays - pipe A vblank wait timed out"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102711">bug 102711</a>
from <span class="vcard"><a class="email" href="mailto:albert@weichselbraun.net" title="Albert Weichselbraun <albert@weichselbraun.net>"> <span class="fn">Albert Weichselbraun</span></a>
</span></b>
<pre>Just in case somebody else runs into this problem. I did some debugging by
comparing the changes between linux v4.12.7 and v4.12.8.
In fact this problem has been triggered by a change in the xhci driver
(drivers/usb/host/xhci-pci.c) which now does a mandatory reset of some xhci
devices.
<snip>
/* For some HW implementations, a XHCI reset is just not enough... */
if (usb_xhci_needs_pci_reset(dev) {
dev_info(&dev_>dev, "Resetting\n");
if (pci_reset_function_locked(dev))
dev_warn(&dev->dev, "Reset failed");
}
</snip>
In my case this seemed to mess up the external USB controller
USB controller: Renesas Technology Corp. uPD720202 USB 3.0 Host Controller
(rev 02)
and led to the freezes as well as to the error message of the display driver.</pre>
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