wheezy の mesa が古すぎて(8.0.5)最近の Intel HD Graphics で GLX がまともに動作しない，という問題があって jessie (testing) に移行試行中(mesa は 10.3.2)．
ちなみに wheezy であっても /usr/lib/xorg/modules/drivers/intel_drv.so にhttps://01.org/linuxgraphics/downloadsの最新の xf86-video-intel を compile して配置すれば，Xorg 自体は最新の Intel HD Graphics を認識してくれる．がしかし mesa が古すぎて，これの自前 compile は大変なので．．．という話．
以下Xorg.0.logの情報(wheezyとjessie)．ともにXorgからは認識できている．
- wheezy + intel_drv.so (自前) (2.99.910)
(II) Module intel: vendor="X.Org Foundation" compiled for 1.12.4, module version = 2.99.910 Module class: X.Org Video Driver ABI class: X.Org Video Driver, version 12.1 (II) intel: Driver for Intel(R) Integrated Graphics Chipsets: i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45, 4 Series, G45/G43, Q45/Q43, G41, B43 (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics 4600
- jessie + intel_drv.so (xserver-xorg-video-intel) (2:2.21.15-2+b2)
(II) Module intel: vendor="X.Org Foundation" compiled for 1.15.99.904, module version = 2.21.15 Module class: X.Org Video Driver ABI class: X.Org Video Driver, version 18.0 (II) intel: Driver for Intel(R) Integrated Graphics Chipsets: i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45, 4 Series, G45/G43, Q45/Q43, G41, B43, HD Graphics, HD Graphics 2000, HD Graphics 3000, HD Graphics 2500, HD Graphics 4000, HD Graphics P4000, HD Graphics 4600, HD Graphics 5000, HD Graphics P4600/P4700, Iris(TM) Graphics 5100, HD Graphics 4400, HD Graphics 4200, Iris(TM) Pro Graphics 5200 (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics 4600
で，wheezy の場合は mesa が古いので，glxinfo で
Unrecognized deviceID 0x412
と怒られてしまう．ということで仕方なしにjessie (testing)にあげる．