misc/55351: i965: Failed to submit batchbuffer: Input/output error in pcb

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>Number:         55351
>Category:       misc
>Synopsis:       i965: Failed to submit batchbuffer: Input/output error in pcb
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    misc-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jun 06 00:30:00 +0000 2020
>Originator:     guest01
>Release:        pcb-4.1.3nb4        Printed circuit board layout system
>Organization:
-
>Environment:
NetBSD localhost 9.0_STABLE NetBSD 9.0_STABLE (GENERIC) #0: Sun May 31 10:46:21 UTC 2020  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
>Description:
pcb crash with "i965: Failed to submit batchbuffer: Input/output error"

Sorry, I can't reply to an email.
>How-To-Repeat:
(1)    Hardware: computer with Integrated Graphics Chipset: Intel(R) HD
       Graphics
(2)    Set line (without this X does not work properly)
       Option     "AccelMethod"                "uxa"
       in /etc/X11/xorg.conf
(3)    Start X with startx command
(4)    Run pcb with pcb command
(5)    Pcb window opens but it stops responding after a few seconds
(6)    Pcb process terminates with "i965: Failed to submit batchbuffer: Input/output error"
>Fix:
Temporary fix:

before you start X set line
Option     "NoAccel"                   "True"
in /etc/X11/xorg.conf

or

before you run pcb set variable
export LIBGL_ALWAYS_SOFTWARE=1