[Bug 38473] New: [egl] When program ends, monitor is switched off leaving system unusable

[Bug 38473] New: [egl] When program ends, monitor is switched off leaving system unusable

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=38473

           Summary: [egl] When program ends, monitor is switched off
                    leaving system unusable
           Product: Mesa
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: rleigh@debian.org


Using current git and mesa demos 8.0.1 for testing, with linux 2.6.39 with
radeondrmfb on a radeon HD4850/RV770 graphics card, and HP LP2475w monitor via
an HDMI cable.  I'm using EGL_PLATFORM=drm running on the framebuffer console.

What I see is that the demo programs run at the native resolution (1920×1200)
but when the program ends (either by C-c/SIGTERM or by ending after the 5
seconds it runs for) it causes the display to power down, leaving the system in
an unusable state.  [I'm running X on vt7, so a switch to vt7 and back makes
things work again, but if I wasn't running X, I'd need to reboot the system to
reinitialise things.]

I've tested with src/egl/opengles1/gears_screen, src/egl/opengles1/torus_screen
and src/egl/openvg/lion_screen (the rest of the demos have glx dependencies or
other deps which make them fail to run on the console).

A log of a sample run is attached.  Note the kernel HDMI hot plug events from
the kernel log at the end which are presumably related.  I'm not sure when
these are issued due to the monitor being off.  It might be at power down, or
when I switch to vt7 and back again.

Regards,
Roger

% EGL_LOG_LEVEL=debug  EGL_PLATFORM=drm  ./lion_screen
libEGL debug: EGL search path is /usr/lib/x86_64-linux-gnu/egl
libEGL debug: added /usr/lib/x86_64-linux-gnu/egl/egl_gallium.so to module
array
libEGL debug: added egl_dri2 to module array
libEGL debug: added egl_glx to module array
libEGL debug: dlopen(/usr/lib/x86_64-linux-gnu/egl/egl_gallium.so)
libEGL info: use DRM for display (nil)
libEGL warning: pci id for 3: 1002:9442, driver r600
libEGL debug: searching for pipe module r600
libEGL debug: loaded /usr/lib/x86_64-linux-gnu/egl/pipe_r600.so
libEGL debug: the best driver is Gallium
EGL_VERSION = 1.4 (Gallium)
libEGL debug: searching for st module OpenVG
libEGL debug: loaded /usr/lib/x86_64-linux-gnu/egl/st_OpenVG.so
Found 16 modes:
  0: 1920 x 1200
  1: 1920 x 1080
  2: 1600 x 1200
  3: 1680 x 1050
  4: 1600 x 1000
  5: 1280 x 1024
  6: 1280 x 1024
  7: 1280 x 960
  8: 1152 x 864
  9: 1024 x 768
 10: 1024 x 768
 11: 832 x 624
 12: 800 x 600
 13: 800 x 600
 14: 640 x 480
 15: 640 x 480
Will use screen size: 1920 x 1200
1328 frames in 5.0 seconds = 265.441 FPS
[28195.432084] HDMI hot plug event: Pin=3 Presence_Detect=0 ELD_Valid=0
[28195.434164] HDMI hot plug event: Pin=3 Presence_Detect=0 ELD_Valid=0

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[Bug 38473] [egl] When program ends, monitor is switched off leaving system unusable

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https://bugs.freedesktop.org/show_bug.cgi?id=38473

--- Comment #1 from Roger Leigh <rleigh@debian.org> 2011-06-19 11:00:31 PDT ---
To follow up, it now appears that I can't reliably reproduce the issue with the
src/egl/opengles1/gears_screen or src/egl/openvg/lion_screen  demos (unless I
kill them early with C-c/SIGTERM).
src/egl/opengles1/torus_screen always turns off the screen.

So this would appear to be an issue with the programs not cleaning up properly
when terminated for the first two, or at all for the latter.

However, I would still expect the display to remain powered on no matter the
nature of how the program was terminated.

Note that for the first two the display blanks for several seconds on
termination, and I still get the HDMI hotplug events shown in the first
message.  This looks like it's doing something odd with the monitor anyway: I
would not expect any resolution switching, messing with energy/power features
of the monitor etc. when cleaning up.  Since I'm using KMS, and am using the
native panel resolution, I wouldn't expect to see any screen blanking at all.

Regards,
Roger

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[Bug 38473] [egl] When program ends, monitor is switched off leaving system unusable

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https://bugs.freedesktop.org/show_bug.cgi?id=38473

--- Comment #2 from Roger Leigh <rleigh@debian.org> 2011-06-19 11:07:04 PDT ---
Created an attachment (id=48167)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=48167)
modeprint output

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[Bug 38473] [egl] When program ends, monitor is switched off leaving system unusable

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https://bugs.freedesktop.org/show_bug.cgi?id=38473

--- Comment #3 from Roger Leigh <rleigh@debian.org> 2011-06-19 11:07:31 PDT ---
Created an attachment (id=48168)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=48168)
modetest output

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[Bug 38473] [egl] When program ends, monitor is switched off leaving system unusable

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https://bugs.freedesktop.org/show_bug.cgi?id=38473

--- Comment #4 from Alan <alan@linux.intel.com> 2011-06-19 11:13:27 PDT ---
The kernel KMS library responds to a case where the currently displayed surface
is deleted by turning off the CRT. This is what I think you are seeing. I
tweaked the GMA500 driver to stop this behaviour and personally I think that
the default behaviour is wrong.

You should also be able to get it back with alt-sysrq  V

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[Bug 38473] [egl] When program ends, monitor is switched off leaving system unusable

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https://bugs.freedesktop.org/show_bug.cgi?id=38473

--- Comment #5 from Roger Leigh <rleigh@debian.org> 2011-06-19 11:29:04 PDT ---
Alt-SysRq-V certainly restores the display to its former state (framebuffer
console running at native resolution).

Should I open a bug in the kernel bugzilla for this issue, or is this something
that the mesa drivers can work around?  I guess once you've killed a mesa-using
program it's really in the hands of the kernel to do the necessary restoring of
the state.


Thanks,
Roger

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[Bug 38473] [egl] When program ends, monitor is switched off leaving system unusable

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https://bugs.freedesktop.org/show_bug.cgi?id=38473

--- Comment #6 from Chia-I Wu <olvaffe@gmail.com> 2011-06-26 18:23:42 PDT ---
There could be multiple issues in this bug.  First of all, I have never be able
to tested those demos with a Radeon card.  How EGL does modesetting may be
wrong or trigger a bug somewhere else.  Then there is no code to do VT switch. 
The screen will turn off when the demos end.

For EGL on DRM, it is suggested to base your work on eglkms.c, not other
EGL_MESA_screen_surface-based demos.  You will have to do KMS manually: easier
to see how it works and easier to debug on new hardware.  You might also want
to extend it to do VT switch.

(Note that eglkms is currently broken with mesa git head)

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[Bug 38473] [egl] When program ends, monitor is switched off leaving system unusable

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https://bugs.freedesktop.org/show_bug.cgi?id=38473

--- Comment #7 from Benjamin Franzke <benjaminfranzke@googlemail.com> 2011-06-27 02:10:14 PDT ---
Screen turning off should be fixed for src/egl/opengl/eglkms.c by
http://cgit.freedesktop.org/mesa/demos/commit/?id=0e83890b5eae0236537d844c60375072210995d9

Note: you need mesa git master.

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[Bug 38473] [egl] When program ends, monitor is switched off leaving system unusable

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https://bugs.freedesktop.org/show_bug.cgi?id=38473

--- Comment #8 from Michel Dänzer <michel@daenzer.net> 2011-12-29 09:18:33 PST ---
Is this still an issue?

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[Bug 38473] [egl] When program ends, monitor is switched off leaving system unusable

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https://bugs.freedesktop.org/show_bug.cgi?id=38473

--- Comment #9 from Roger Leigh <rleigh@debian.org> 2011-12-30 03:41:37 PST ---
Hi Michel,

Just tried to verify this for you with current Debian unstable, but I can't get
any EGL/DRM program to run.  Here's an example:

% EGL_LOG_LEVEL=debug EGL_PLATFORM=drm ./gears_screen
libEGL debug: EGL search path is /usr/lib/x86_64-linux-gnu/egl
libEGL debug: added /usr/lib/x86_64-linux-gnu/egl/egl_gallium.so to module
array
libEGL debug: added egl_dri2 to module array
libEGL debug: added egl_glx to module array
libEGL debug: dlopen(/usr/lib/x86_64-linux-gnu/egl/egl_gallium.so)
libEGL info: use DRM for display (nil)
libEGL debug: EGL user error 0x3001 (EGL_NOT_INITIALIZED) in eglInitialize(no
usable display)

Not sure if I'm misconfiguring something here (since EGL_PLATFORM=drm used to
pick up the r600 just fine).  I did switch from a Radeon HD 4850 to 6800 in the
interim, but thought it was supported just fine.  drm and radeondrmfb are
certainly set up.

% EGL_LOG_LEVEL=debug EGL_PLATFORM=drm gdb ./gears_screen
GNU gdb (GDB) 7.3-debian
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from
/home/rleigh/code/mesa-demos/src/egl/opengles1/gears_screen...done.
(gdb) run
Starting program: /home/rleigh/code/mesa-demos/src/egl/opengles1/gears_screen
[Thread debugging using libthread_db enabled]
libEGL debug: EGL search path is /usr/lib/x86_64-linux-gnu/egl
libEGL debug: added /usr/lib/x86_64-linux-gnu/egl/egl_gallium.so to module
array
libEGL debug: added egl_dri2 to module array
libEGL debug: added egl_glx to module array
libEGL debug: dlopen(/usr/lib/x86_64-linux-gnu/egl/egl_gallium.so)
Traceback (most recent call last):
  File "/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.16-gdb.py", line 59, in
<module>
    from libstdcxx.v6.printers import register_libstdcxx_printers
ImportError: No module named libstdcxx.v6.printers
libEGL info: use DRM for display (nil)
libEGL debug: EGL user error 0x3001 (EGL_NOT_INITIALIZED) in eglInitialize(no
usable display)


Program received signal SIGSEGV, Segmentation fault.
gbm_device_get_backend_name (gbm=0x0) at gbm.c:61
61    gbm.c: No such file or directory.
    in gbm.c
(gdb) bt
#0  gbm_device_get_backend_name (gbm=0x0) at gbm.c:61
#1  0x00007ffff7bc90c1 in dri2_initialize_drm (drv=0x41f360, disp=0x405010) at
platform_drm.c:104
#2  0x00007ffff7bc34e0 in _eglMatchAndInitialize (dpy=0x405010) at
egldriver.c:608
#3  0x00007ffff7bc3923 in _eglMatchDriver (dpy=0x405010, test_only=0) at
egldriver.c:639
#4  0x00007ffff7bbe762 in eglInitialize (dpy=0x405010, major=0x404448,
minor=0x40444c) at eglapi.c:323
#5  0x0000000000402991 in eglutInit (argc=<optimized out>, argv=<optimized
out>) at eglut.c:194
#6  0x000000000040264e in main (argc=<optimized out>, argv=0x7fffffffeaa8) at
gears.c:368


Regards,
Roger

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[Bug 38473] [egl] When program ends, monitor is switched off leaving system unusable

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https://bugs.freedesktop.org/show_bug.cgi?id=38473

--- Comment #10 from Michel Dänzer <michel@daenzer.net> 2012-01-03 04:04:58 PST ---
(In reply to comment #9)
> Just tried to verify this for you

Not for me. I asked because it seems to work for me with upstream Git. I just
verified again it still does.


> with current Debian unstable, but I can't get any EGL/DRM program to run. 
> Here's an example:
> 
> % EGL_LOG_LEVEL=debug EGL_PLATFORM=drm ./gears_screen
> libEGL debug: EGL search path is /usr/lib/x86_64-linux-gnu/egl
> libEGL debug: added /usr/lib/x86_64-linux-gnu/egl/egl_gallium.so to module
> array
> libEGL debug: added egl_dri2 to module array
> libEGL debug: added egl_glx to module array
> libEGL debug: dlopen(/usr/lib/x86_64-linux-gnu/egl/egl_gallium.so)
> libEGL info: use DRM for display (nil)
> libEGL debug: EGL user error 0x3001 (EGL_NOT_INITIALIZED) in eglInitialize(no
> usable display)
> 
> Not sure if I'm misconfiguring something here (since EGL_PLATFORM=drm used to
> pick up the r600 just fine).  I did switch from a Radeon HD 4850 to 6800 in the
> interim, but thought it was supported just fine.

Not sure what's up there. Maybe the PCI ID of your new card is missing
somewhere on the Mesa 7.11 branch. Anyway, it doesn't seem directly related to
this bug report.

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[Bug 38473] [egl] When program ends, monitor is switched off leaving system unusable

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https://bugs.freedesktop.org/show_bug.cgi?id=38473

Marek Olšák <maraeo@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #11 from Marek Olšák <maraeo@gmail.com> ---
Closing as per Michel's comment:

> Not for me. I asked because it seems to work for me with upstream Git. I
> just verified again it still does.

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