I found out the issue could be reproduced by ffplay'ing one of the
OpenBSD's songs.
I have applied your patch and compiled my own kernel, the issue
seems to be gone.
On Fri, Oct 1 2021 at 16:47:35 +1000, Jonathan Gray <j...@jsg.id.au>
wrote:
On Fri, Oct 01, 2021 at 08:27:48AM +0200, ASC wrote:
>Synopsis: Dropped in an empty tty randomly
>Category: system
>Environment:
System : OpenBSD 7.0
Details : OpenBSD 7.0 (GENERIC.MP) #231: Mon Sep 27 17:23:17 MDT
2021
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
Architecture: OpenBSD.amd64
Machine : amd64
>Description:
I was simply browsing with the Tor Browser this morning
and the screen blacked out. I could type but nothing else.
The dmesg showed some DRM-related warning.
>How-To-Repeat:
Use OpenBSD
>Fix:
???
revelant dmesg lines:
inteldrm0 at pci0 dev 2 function 0 "Intel GM45 Video" rev 0x07
drm0 at inteldrm0
intagp0 at inteldrm0
inteldrm0: apic 2 int 16, GM45, gen 4
inteldrm0: 1280x800, 32bpp
wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation),
using wskbd0
drm:pid51001:intel_gt_reset *NOTICE* [drm] Resetting chip for
context
closure in tor-browser<51001>
If you can reproduce this try the following
Index: sys/dev/pci/drm/i915/gem/i915_gem_context.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/drm/i915/gem/i915_gem_context.c,v
retrieving revision 1.5
diff -u -p -r1.5 i915_gem_context.c
--- sys/dev/pci/drm/i915/gem/i915_gem_context.c 18 Jul 2021 10:20:06
-0000 1.5
+++ sys/dev/pci/drm/i915/gem/i915_gem_context.c 1 Oct 2021 06:41:51
-0000
@@ -549,9 +549,10 @@ static void kill_context(struct i915_gem
}
/*
- * XXX don't incorrectly reset chip on vlv/ivb/hsw/bdw cause
unknown
+ * XXX don't incorrectly reset chip on
+ * gm45/vlv/ivb/hsw/bdw cause unknown
*/
- if (IS_GEN_RANGE(ctx->i915, 7, 8)) {
+ if (IS_GEN_RANGE(ctx->i915, 4, 8)) {
if (warn) {
DRM_DEBUG("%s XXX skipping reset pos %p\n",
__func__, pos);
warn = 0;
