[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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https://bugs.freedesktop.org/show_bug.cgi?id=103699

Tapani Pälli  changed:

   What|Removed |Added

 CC||kamalah...@openmailbox.org

--- Comment #32 from Tapani Pälli  ---
*** Bug 105871 has been marked as a duplicate of this bug. ***

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #31 from Adam Jackson  ---
To ssh://git.freedesktop.org/git/xorg/xserver
   ebfb06b11..a13271f2f  server-1.19-branch -> server-1.19-branch

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #30 from Mario Kleiner  ---
We should also get this cherry-picked into the 1.19 branch. Otherwise it might
happen that the new Mesa ships in spring distribution releases with an old 1.19
X-Server, e.g., Ubuntu 18.04-LTS.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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https://bugs.freedesktop.org/show_bug.cgi?id=103699

Tapani Pälli  changed:

   What|Removed |Added

 Resolution|--- |FIXED
 Status|ASSIGNED|RESOLVED

--- Comment #29 from Tapani Pälli  ---
I haven't been able to reproduce this after following commit landed to Xorg and
I haven't received any new bugs on this subject. Resolving as fixed, please
reopen if this still occurs.

--- 8< ---
commit c2954b16c8730c7ed8441fd8dba25900f3aed265
Author: Tapani Pälli 
Date:   Tue Nov 28 09:23:29 2017 +0200

glx: do not pick sRGB config for 32-bit RGBA visual

This fixes blending issues seen with kwin and gnome-shell when
32bit visual has sRGB capability set.

Reviewed-by: Adam Jackson 
Signed-off-by: Tapani Pälli 
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103699
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103646
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103655

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #28 from Tapani Pälli  ---
(In reply to Germano Massullo from comment #27)
> Screenshots of malfunction
> https://bugzilla.mozilla.org/attachment.cgi?id=8932561
> https://bugzilla.mozilla.org/attachment.cgi?id=8932563(In reply to Germano
> Massullo from comment #21)
> > Hi there my system has
> > - Mesa 17.2.4;
> > - KDE Plasma 5.10
> > on Fedora 26 and I think I am experiencing this problem. I opened a Firefox
> > bugreport before finding out about this Mesa bugreport
> > 
> > https://bugzilla.mozilla.org/show_bug.cgi?id=1421353
> > 
> > # lspci -k | grep -iA 3 vga
> > 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
> > Ellesmere [Radeon RX 470/480/570/580] (rev c7)
> > Subsystem: XFX Pine Group Inc. Radeon RX 480
> > Kernel driver in use: amdgpu
> > Kernel modules: amdgpu
> 
> Just opened a similar bugreport for AMDGPU
> https://bugs.freedesktop.org/show_bug.cgi?id=104216

Based on the screenshots it looks like that is a separate issue. This bug
causes issues on 'window level' and not for only some contents of window.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #27 from Germano Massullo  ---
Screenshots of malfunction
https://bugzilla.mozilla.org/attachment.cgi?id=8932561
https://bugzilla.mozilla.org/attachment.cgi?id=8932563(In reply to Germano
Massullo from comment #21)
> Hi there my system has
> - Mesa 17.2.4;
> - KDE Plasma 5.10
> on Fedora 26 and I think I am experiencing this problem. I opened a Firefox
> bugreport before finding out about this Mesa bugreport
> 
> https://bugzilla.mozilla.org/show_bug.cgi?id=1421353
> 
> # lspci -k | grep -iA 3 vga
> 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
> Ellesmere [Radeon RX 470/480/570/580] (rev c7)
> Subsystem: XFX Pine Group Inc. Radeon RX 480
> Kernel driver in use: amdgpu
> Kernel modules: amdgpu

Just opened a similar bugreport for AMDGPU
https://bugs.freedesktop.org/show_bug.cgi?id=104216

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #26 from Tapani Pälli  ---
(In reply to Mario Kleiner from comment #25)
> Another problem caused by the new Mesa srgb visuals -- and assigning srgb to
> the special 32 bit composite overlay --  seems to be that the
> xf86-video-intel ddx will only give you a black screen under KDE Plasma 5,
> as tested with KUbuntu 16.04.3 LTS + distribution provided X-Server 1.19.3.
> Found this when i disabled depth 30 after testing my 10 bpc Mesa patches on
> top of the new srgb patch and stared at a black screen after logging in
> again.
> 
> Works fine with the intel-ddx at X-Screen "DefaultDepth 30", or with the
> modesetting ddx at regular depth 24.

Yep, the symptoms are little bit different depending on gpu (different visual
list) and how driver implements texture from pixmap with srgb (AFAIK not
defined by any spec) :/ Hopefully the patch would be reviewed soon.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #24 from Tapani Pälli  ---
(In reply to Fredrik Höglund from comment #23)
> (In reply to Tapani Pälli from comment #22)
> > (In reply to Fredrik Höglund from comment #20)
> > > Created attachment 135782 [details]
> > > modified test case
> > >
> > > The window decoration is a separate texture in kwin, so the decoration
> > > should be rendered normally even if the fbconfig is causing a blending 
> > > issue
> > > with the window contents. I think it is more likely that binding the 
> > > pixmap
> > > to a texture failed, and kwin is skipping the window entirely as a result.
> > >
> >
> > It is possible that there are 2 separate issues. One is the rendering
> > results of krunner, panel and launcher menu, that is way too dark and then
> > there are these invisible windows. Both get fixed by not setting sRGB
> > capable config for 32bit visual, which I think is correct thing todo since
> > there is only 1 such (non-conformant) visual exposed.
> 
> Yes, I believe the dark windows is a result of Qt not using the ARGB visual
> for those windows, so the background which is supposed to be translucent is
> solid black.
> 
> I don't disagree with the solution, but I don't think these are blending
> issues; it's rather that applications are looking for a non-sRGB capable
> fbconfig associated with the ARGB visual, and either giving up or falling
> back to a non-ARGB visual after not finding one.

Yep having done some more investigation I do agree it's not about blending,
it's about getting wrong kind of visual. I'll wait for review comments on the
xorg change.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #25 from Mario Kleiner  ---
Another problem caused by the new Mesa srgb visuals -- and assigning srgb to
the special 32 bit composite overlay --  seems to be that the xf86-video-intel
ddx will only give you a black screen under KDE Plasma 5, as tested with
KUbuntu 16.04.3 LTS + distribution provided X-Server 1.19.3. Found this when i
disabled depth 30 after testing my 10 bpc Mesa patches on top of the new srgb
patch and stared at a black screen after logging in again.

Works fine with the intel-ddx at X-Screen "DefaultDepth 30", or with the
modesetting ddx at regular depth 24.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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--- Comment #23 from Fredrik Höglund  ---
(In reply to Tapani Pälli from comment #22)
> (In reply to Fredrik Höglund from comment #20)
> > Created attachment 135782 [details]
> > modified test case
> >
> > The window decoration is a separate texture in kwin, so the decoration
> > should be rendered normally even if the fbconfig is causing a blending issue
> > with the window contents. I think it is more likely that binding the pixmap
> > to a texture failed, and kwin is skipping the window entirely as a result.
> >
>
> It is possible that there are 2 separate issues. One is the rendering
> results of krunner, panel and launcher menu, that is way too dark and then
> there are these invisible windows. Both get fixed by not setting sRGB
> capable config for 32bit visual, which I think is correct thing todo since
> there is only 1 such (non-conformant) visual exposed.

Yes, I believe the dark windows is a result of Qt not using the ARGB visual for
those windows, so the background which is supposed to be translucent is solid
black.

I don't disagree with the solution, but I don't think these are blending
issues; it's rather that applications are looking for a non-sRGB capable
fbconfig associated with the ARGB visual, and either giving up or falling back
to a non-ARGB visual after not finding one.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #22 from Tapani Pälli  ---
(In reply to Fredrik Höglund from comment #20)
> Created attachment 135782 [details]
> modified test case
> 
> The window decoration is a separate texture in kwin, so the decoration
> should be rendered normally even if the fbconfig is causing a blending issue
> with the window contents. I think it is more likely that binding the pixmap
> to a texture failed, and kwin is skipping the window entirely as a result.
> 

It is possible that there are 2 separate issues. One is the rendering results
of krunner, panel and launcher menu, that is way too dark and then there are
these invisible windows. Both get fixed by not setting sRGB capable config for
32bit visual, which I think is correct thing todo since there is only 1 such
(non-conformant) visual exposed.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #21 from Germano Massullo  ---
Hi there my system has
- Mesa 17.2.4;
- KDE Plasma 5.10
on Fedora 26 and I think I am experiencing this problem. I opened a Firefox
bugreport before finding out about this Mesa bugreport

https://bugzilla.mozilla.org/show_bug.cgi?id=1421353

# lspci -k | grep -iA 3 vga
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Radeon RX 470/480/570/580] (rev c7)
Subsystem: XFX Pine Group Inc. Radeon RX 480
Kernel driver in use: amdgpu
Kernel modules: amdgpu

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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Fredrik Höglund  changed:

   What|Removed |Added

 Attachment #135512|0   |1
is obsolete||

--- Comment #20 from Fredrik Höglund  ---
Created attachment 135782
  --> https://bugs.freedesktop.org/attachment.cgi?id=135782=edit
modified test case

The window decoration is a separate texture in kwin, so the decoration should
be rendered normally even if the fbconfig is causing a blending issue with the
window contents. I think it is more likely that binding the pixmap to a texture
failed, and kwin is skipping the window entirely as a result.

I'm attaching a modified version of the test case that prints all the
attributes kwin looks at, and also does the additional filtering and sorting of
fbconfigs that kwin does. This version also sets GLX_ALPHA_SIZE to 8 and
GLX_BUFFER_SIZE to 32.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

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--- Comment #19 from Tapani Pälli  ---
Created attachment 135745
  --> https://bugs.freedesktop.org/attachment.cgi?id=135745=edit
fix/workaround

I've sent this patch to xorg-devel for review/discussion. Problem is that GLX
may pick sRGB capable config for 32bit visual that is used for translucent
windows and compositor (kwin) does not seem to do blending properly in this
case as it seems not aware of sRGB at all. Another bug indicated that
gnome-shell may have the same issue so I'm proposing to disable sRGB globally
32bit visual for now.

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--- Comment #18 from Tapani Pälli  ---
(In reply to sergio.callegari from comment #17)
> Tried the test application.
> 
> See the attached file (hope I did it properly, this time) for its output.
> 
> The application is not successful in displaying a window, but makes the
> window manager think that a window has been opened. In fact, the task manger
> starts showing a button for an unnamed window. Clicking the button does not
> rise any window, though and merely takes focus away from the previously
> focused window.

Yep, I believe I managed to isolate there what is happening with those Firefox
menus, they get created with 32bit visual and are then invisible for some
reason. Thanks for the output, will keep digging what causes this.

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--- Comment #17 from sergio.calleg...@gmail.com ---
Tried the test application.

See the attached file (hope I did it properly, this time) for its output.

The application is not successful in displaying a window, but makes the window
manager think that a window has been opened. In fact, the task manger starts
showing a button for an unnamed window. Clicking the button does not rise any
window, though and merely takes focus away from the previously focused window.

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--- Comment #16 from sergio.calleg...@gmail.com ---
Created attachment 135604
  --> https://bugs.freedesktop.org/attachment.cgi?id=135604=edit
output of glxapp (test application)

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--- Comment #15 from Emil Velikov  ---
(In reply to sergio.callegari from comment #13)

> Please provide cmdline to compile the test application to save me
> identifying which libs need to be linked in.
> 
The program that information already
$ g++ -g -ggdb -o glxapp test.cpp -lX11 -lXrender -lGL


> output of glxinfo follows:
> 
For the future please keep this as plain/text attachment.

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--- Comment #14 from Tapani Pälli  ---
You'll need libx11, libxrender and libgl development packages, on Fedora they
are called:

libX11-devel
libXrender-devel
mesa-libGL-devel

Following line should compile the app:

g++ -g -ggdb -o glxapp test.cpp -lX11 -lXrender -lGL

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--- Comment #13 from sergio.calleg...@gmail.com ---
As of today, with mesa 17.4 + git snapshot taken on 17.11.20 07:30 at commit
59ca0, I still see the issue. I do not know if the latest patch is in.

Please provide cmdline to compile the test application to save me identifying
which libs need to be linked in.

output of glxinfo follows:

name of display: :0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile, 
GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float, 
GLX_ARB_framebuffer_sRGB, GLX_ARB_multisample, 
GLX_EXT_create_context_es2_profile, GLX_EXT_create_context_es_profile, 
GLX_EXT_fbconfig_packed_float, GLX_EXT_framebuffer_sRGB, 
GLX_EXT_import_context, GLX_EXT_libglvnd, GLX_EXT_texture_from_pixmap, 
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_INTEL_swap_event, 
GLX_MESA_copy_sub_buffer, GLX_OML_swap_method, GLX_SGIS_multisample, 
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, 
GLX_SGI_make_current_read, GLX_SGI_swap_control
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
GLX_ARB_context_flush_control, GLX_ARB_create_context, 
GLX_ARB_create_context_profile, GLX_ARB_create_context_robustness, 
GLX_ARB_fbconfig_float, GLX_ARB_framebuffer_sRGB, 
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_buffer_age, 
GLX_EXT_create_context_es2_profile, GLX_EXT_create_context_es_profile, 
GLX_EXT_fbconfig_packed_float, GLX_EXT_framebuffer_sRGB, 
GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, 
GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, 
GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, 
GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, 
GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
GLX_SGIX_visual_select_group, GLX_SGI_make_current_read, 
GLX_SGI_swap_control, GLX_SGI_video_sync
GLX version: 1.4
GLX extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile, 
GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float, 
GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample, 
GLX_EXT_buffer_age, GLX_EXT_create_context_es2_profile, 
GLX_EXT_create_context_es_profile, GLX_EXT_fbconfig_packed_float, 
GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context, 
GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, 
GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, 
GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, 
GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
GLX_SGIX_visual_select_group, GLX_SGI_make_current_read, 
GLX_SGI_swap_control, GLX_SGI_video_sync
Extended renderer info (GLX_MESA_query_renderer):
Vendor: Intel Open Source Technology Center (0x8086)
Device: Mesa DRI Intel(R) Haswell Mobile  (0xd26)
Version: 17.4.0
Accelerated: yes
Video memory: 1536MB
Unified memory: yes
Preferred profile: core (0x1)
Max core profile version: 4.5
Max compat profile version: 3.0
Max GLES1 profile version: 1.1
Max GLES[23] profile version: 3.1
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Haswell Mobile 
OpenGL core profile version string: 4.5 (Core Profile) Mesa 17.4.0-devel
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
GL_3DFX_texture_compression_FXT1, GL_AMD_conservative_depth, 
GL_AMD_draw_buffers_blend, GL_AMD_seamless_cubemap_per_texture, 
GL_AMD_shader_trinary_minmax, GL_AMD_vertex_shader_layer, 
GL_AMD_vertex_shader_viewport_index, GL_ANGLE_texture_compression_dxt3, 
GL_ANGLE_texture_compression_dxt5, GL_APPLE_object_purgeable, 
GL_ARB_ES2_compatibility, GL_ARB_ES3_1_compatibility, 
GL_ARB_ES3_compatibility, GL_ARB_arrays_of_arrays, GL_ARB_base_instance, 
GL_ARB_blend_func_extended, GL_ARB_buffer_storage, 
GL_ARB_clear_buffer_object, GL_ARB_clear_texture, GL_ARB_clip_control, 
GL_ARB_compressed_texture_pixel_storage, GL_ARB_compute_shader, 
GL_ARB_conditional_render_inverted, GL_ARB_conservative_depth, 
GL_ARB_copy_buffer, GL_ARB_copy_image, GL_ARB_cull_distance, 
GL_ARB_debug_output, GL_ARB_depth_buffer_float, GL_ARB_depth_clamp, 
GL_ARB_derivative_control, GL_ARB_direct_state_access, 
GL_ARB_draw_buffers, GL_ARB_draw_buffers_blend, 
GL_ARB_draw_elements_base_vertex, GL_ARB_draw_indirect, 
GL_ARB_draw_instanced, GL_ARB_enhanced_layouts, 
GL_ARB_explicit_attrib_location, 

[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #12 from Tapani Pälli  ---
Created attachment 135537
  --> https://bugs.freedesktop.org/attachment.cgi?id=135537=edit
workaround

This patch (that simply rearranges visuals) fixes the issue.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #11 from Tapani Pälli  ---
Created attachment 135512
  --> https://bugs.freedesktop.org/attachment.cgi?id=135512=edit
test case

Could you please compile and run this test application and attach what is
prints? Does it create a visible window? Also please attach your glxinfo
output. Many thanks!

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #10 from Tapani Pälli  ---
(In reply to sergio.callegari from comment #9)
> Tried right now. Incidentally, I have always been working with SNA, since it
> is fine on haswell and snappier than glamor.
> 
> I still see the issue with mesa as of
> 
> 17.4 git snapshot taken on 17/11/15 07:30 commit id 65123e...
> 
> I'll try again when a newer build of a mesa snapshot is available for
> kubuntu 17.10 (likely tomorrow).

OK thanks, I was able to reproduce this just yesterday but today after update
from oibaf not anymore .. so I'm really confused what this is about :/

My testing has been with older plasma 5.10.5 though as this is what the other
bug 103655 is filed against. I will go through all the components today as I
did replace dri and libGL of my own but later replaced by doing "apt-get
install --reinstall" and menus still worked.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #9 from sergio.calleg...@gmail.com ---
Tried right now. Incidentally, I have always been working with SNA, since it is
fine on haswell and snappier than glamor.

I still see the issue with mesa as of

17.4 git snapshot taken on 17/11/15 07:30 commit id 65123e...

I'll try again when a newer build of a mesa snapshot is available for kubuntu
17.10 (likely tomorrow).

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #8 from Tapani Pälli  ---
(also please try again with latest mesa)

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #6 from Tapani Pälli  ---
Hello, could you please retry with using "sna" as the acceleration method? I
will attach here required configuration file for testing this. You will need to
copy this file to /usr/share/X11/xorg.conf.d/.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #7 from Tapani Pälli  ---
Created attachment 135480
  --> https://bugs.freedesktop.org/attachment.cgi?id=135480=edit
enable sna

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #5 from Tapani Pälli  ---
I've reproduced this and trying to understand what's going on. This is caused
by my patch that exposes sRGB visuals.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #4 from sergio.calleg...@gmail.com ---
> BTW how did you install plasma 5.11.3? Kubuntu artful has 5.10.5 by default.

sudo add-apt-repository ppa:kubuntu-ppa/backports

There is a specific repo for kde updates.

> Or maybe not since this was seen also with nouveau. I will anyway try to 
> bisect when this started.

As of today, after another set of mesa updates, I do not see the issue on
nouveau.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #3 from Tapani Pälli  ---
(In reply to Tapani Pälli from comment #1)
> This very likely bisects to commit 688d6958682f96aaeb88aa8cc23cc5c9886a6be4
> so I'm taking this bug.

Or maybe not since this was seen also with nouveau. I will anyway try to bisect
when this started.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

--- Comment #2 from Tapani Pälli  ---
BTW how did you install plasma 5.11.3? Kubuntu artful has 5.10.5 by default.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

Tapani Pälli  changed:

   What|Removed |Added

 Status|NEW |ASSIGNED
   Assignee|mesa-dev@lists.freedesktop. |lem...@gmail.com
   |org |

--- Comment #1 from Tapani Pälli  ---
This very likely bisects to commit 688d6958682f96aaeb88aa8cc23cc5c9886a6be4 so
I'm taking this bug.

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

Tapani Pälli  changed:

   What|Removed |Added

 CC||lem...@gmail.com

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[Mesa-dev] [Bug 103699] Latest mesa breaks firefox on kde plasma with compositing on

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=103699

Bug ID: 103699
   Summary: Latest mesa breaks firefox on kde plasma with
compositing on
   Product: Mesa
   Version: git
  Hardware: Other
OS: All
Status: NEW
  Severity: normal
  Priority: medium
 Component: Mesa core
  Assignee: mesa-dev@lists.freedesktop.org
  Reporter: sergio.calleg...@gmail.com
QA Contact: mesa-dev@lists.freedesktop.org

Seen on kubuntu artful with kde plasma 5.11.3, using the "oibaf" PPA that
provides the latest (git) mesa over the normal distribution one on an almost
daily basis.

Seen both on intel graphics (haswell) and nvidia graphics (Quadro FX 570 with
nouveau).

Since the last week, mesa breaks firefox when compositing is on in the window
manager. Specifically, the overlays that should appear when pressing toolbar
buttons do not appear any more, nor do alert/confirmation dialogs. Note that
firefox does not use the normal system dialogs, rather some overlays right
below the screen element related to them (a button, an element on the toolbar,
etc.).

Reverting to the system version of mesa fixes the issue.

Unfortunately:

1) I have initially thought that the issue was in firefox itself, so I have not
noted down the day on which git mesa started breaking firefox (should be
between 3/11 and 10/11, approximately, though).

2) I cannot bisect, since I rely on pre-built binaries from an ubuntu PPA.

I certainly see the issue with:

libdrm 2.4.88+git170630
mesa 17.4~git1711120730

I do not see it with

libdrm 2.4.83 from ubuntu artful
mesa 17.2.2 from ubuntu artful

Neither I was seeing it with mesa/libdrm from git more than about 1 week ago.

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