On Fri, May 01, 2015 at 06:23:32AM -0400, Maximilian Pichler wrote: > On Fri, May 1, 2015 at 3:52 AM, Jonathan Gray <j...@jsg.id.au> wrote: > > There is currently no support for 5th generation Core i*/Broadwell > > graphics in inteldrm(4). So all X operations with be unaccelerated. > > Thanks for the answer! Is this evident somewhere in the documentation? > intel(4) explicitly lists "Intel(R) Iris(TM) Graphics: 5100/6100" as > supported. Presumably this is only the case on Haswell. > > Also, I was curious how one can determine in general whether > acceleration is enabled. >
intel(4) is the xorg driver (xf86-video-intel). inteldrm(4) is the kernel driver that does the mode setting and command submission. If you have working acceleration you'll see inteldrm in your dmesg: vga1 at pci0 dev 2 function 0 "Intel HD Graphics 4000" rev 0x09 intagp at vga1 not configured inteldrm0 at vga1 drm0 at inteldrm0 inteldrm0: 1366x768 /var/log/Xorg.0.log will contain something along the lines of [ 20.245] (II) intel(0): SNA initialized with Ivybridge (gen7, gt2) backend [ 20.245] (==) intel(0): Backing store enabled [ 20.245] (==) intel(0): Silken mouse disabled [ 20.247] (II) intel(0): HW Cursor enabled [ 20.247] (II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message. [ 20.250] (==) intel(0): DPMS enabled [ 20.252] (II) intel(0): [DRI2] Setup complete [ 20.252] (II) intel(0): [DRI2] DRI driver: i965 [ 20.252] (II) intel(0): [DRI2] VDPAU driver: i965 [ 20.252] (II) intel(0): direct rendering: DRI2 enabled [ 20.252] (II) intel(0): hardware support for Present enabled and glxinfo will be similiar to direct rendering: Yes ... Extended renderer info (GLX_MESA_query_renderer): Vendor: Intel Open Source Technology Center (0x8086) Device: Mesa DRI Intel(R) Ivybridge Mobile (0x166) Version: 10.2.9 Accelerated: yes Video memory: 1536MB Unified memory: yes Preferred profile: core (0x1) Max core profile version: 3.3 Max compat profile version: 3.0 Max GLES1 profile version: 1.1 Max GLES[23] profile version: 3.0