I saw your reference to the log from #2 and took a deeper look at it,
and saw this line:
[ 76855.829] (**) modeset(0): Option "AccelMethod" "glamor"
In my xorg.conf, I had Option "AccelMethod" "None" and hadn't thought
too hard about it because graphical acceleration worked with it set to
"None" and using the 'intel' driver. However, with the driver set as
'intel', I started getting text corruption after suspend and resume
across multiple applications, so I was still looking for answers. I
believe there's a bug elsewhere on launchpad I need to follow up with
about that. So, I probably shouldn't have been surprised that I didn't
have acceleration under the 'modesetting' driver with "AccelMethod"
"None". I switched it to "glamor", and now my Xorg.0.log looks rather
more like the log in #2, and graphical acceleration appears to be
working for me. I did observe flickering at startup on the desktop,
though I haven't seen it elsewhere yet. For the specific comparable
section:
[ 8.958] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
[ 8.958] (II) AIGLX: enabled GLX_ARB_create_context
[ 8.958] (II) AIGLX: enabled GLX_ARB_create_context_profile
[ 8.958] (II) AIGLX: enabled GLX_EXT_create_context_es{,2}_profile
[ 8.958] (II) AIGLX: enabled GLX_INTEL_swap_event
[ 8.958] (II) AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control
[ 8.958] (II) AIGLX: enabled GLX_EXT_framebuffer_sRGB
[ 8.958] (II) AIGLX: enabled GLX_ARB_fbconfig_float
[ 8.958] (II) AIGLX: enabled GLX_EXT_fbconfig_packed_float
[ 8.958] (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects
[ 8.958] (II) AIGLX: enabled GLX_ARB_create_context_robustness
[ 8.958] (II) AIGLX: Loaded and initialized i965
[ 8.958] (II) GLX: Initialized DRI2 GL provider for screen 0
For the relevant bit of the Xorg.0.log regarding glamor:
[ 8.767] (**) modeset(0): Option "AccelMethod" "glamor"
[ 8.767] (==) modeset(0): RGB weight 888
[ 8.767] (==) modeset(0): Default visual is TrueColor
[ 8.767] (II) Loading sub module "glamoregl"
[ 8.767] (II) LoadModule: "glamoregl"
[ 8.767] (II) Loading /usr/lib/xorg/modules/libglamoregl.so
[ 8.777] (II) Module glamoregl: vendor="X.Org Foundation"
[ 8.777] compiled for 1.18.4, module version = 1.0.0
[ 8.777] ABI class: X.Org ANSI C Emulation, version 0.4
[ 8.777] (II) glamor: OpenGL accelerated X.org driver based.
[ 8.799] (II) glamor: EGL version 1.4 (DRI2):
So, hopefully this works for me, though it didn't sound sufficient for
the poster of #2. I'll follow up if/when I discover more, but sorry
that my post boils down to "acceleration didn't work because I didn't
turn it on".
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https://bugs.launchpad.net/bugs/1632165
Title:
modesetting driver unbearably slow on intel graphics
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