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升级到 12.04 后，Intel 855GM 显示缓慢

tag-icon • tag-icon 12.04 11.04 xorg
升级到 12.04 后，Intel 855GM 显示缓慢

我刚刚将 Dell Inspiron 700m 从 11.10 升级到 12.04。现在显示速度比以前慢得多。例如，当我用鼠标拖动 Nautilus 窗口时，窗口的运动明显滞后于鼠标指针（例如，如果我上下移动窗口，指针和窗口运动将几乎相差 180 度）。

来自 dmesg：

[    0.419302] agpgart-intel 0000:00:00.0: Intel 855GM Chipset
[    0.419327] agpgart-intel 0000:00:00.0: detected gtt size: 131072K total, 131072K     mappable
[    0.420659] agpgart-intel 0000:00:00.0: detected 16384K stolen memory
[    0.424248] agpgart-intel 0000:00:00.0: AGP aperture is 128M @ 0xe8000000

来自 Xorg.0.log：

[    48.909] (II) Loading extension DRI2
[    48.909] (II) LoadModule: "intel"
[    48.953] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[    48.953] (II) Module intel: vendor="X.Org Foundation"
[    48.954]    compiled for 1.11.3, module version = 2.17.0
[    48.954]    Module class: X.Org Video Driver
[    48.954]    ABI class: X.Org Video Driver, version 11.0
[    48.954] (II) intel: Driver for Intel 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, B43, Clarkdale, Arrandale,
    Sandybridge Desktop (GT1), Sandybridge Desktop (GT2),
    Sandybridge Desktop (GT2+), Sandybridge Mobile (GT1),
    Sandybridge Mobile (GT2), Sandybridge Mobile (GT2+),
    Sandybridge Server, Ivybridge Mobile (GT1), Ivybridge Mobile (GT2),
    Ivybridge Desktop (GT1), Ivybridge Desktop (GT2), Ivybridge Server
[    48.954] (++) using VT number 7

[    48.956] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[    48.956] drmOpenDevice: node name is /dev/dri/card0
[    48.956] drmOpenDevice: open result is 9, (OK)
[    48.956] drmOpenByBusid: Searching for BusID pci:0000:00:02.0
[    48.956] drmOpenDevice: node name is /dev/dri/card0
[    48.956] drmOpenDevice: open result is 9, (OK)
[    48.956] drmOpenByBusid: drmOpenMinor returns 9
[    48.956] drmOpenByBusid: drmGetBusid reports pci:0000:00:02.0
[    48.956] (II) intel(0): Creating default Display subsection in Screen section
    "Default Screen" for depth/fbbpp 24/32
[    48.956] (==) intel(0): Depth 24, (--) framebuffer bpp 32
[    48.956] (==) intel(0): RGB weight 888
[    48.956] (==) intel(0): Default visual is TrueColor
[    48.956] (**) intel(0): Option "DRI" "true"
[    48.957] (II) intel(0): Integrated Graphics Chipset: Intel(R) 852GM/855GM
[    48.957] (--) intel(0): Chipset: "852GM/855GM"
[    48.957] (**) intel(0): Relaxed fencing disabled
[    48.957] (**) intel(0): Wait on SwapBuffers? enabled
[    48.957] (**) intel(0): Triple buffering? enabled
[    48.957] (**) intel(0): Framebuffer tiled
[    48.957] (**) intel(0): Pixmaps tiled
[    48.957] (**) intel(0): 3D buffers tiled
[    48.957] (**) intel(0): SwapBuffers wait enabled

乍一看没什么特别。它似乎正在检测正确的芯片组并加载相应的驱动程序。我的直觉是它正在使用软件渲染，而之前至少使用过硬件加速。

有什么想法吗？谢谢。

答案1

这可能和这个错误有关：Intel® 965GM x86/MMX/SSE2 性能不佳或者至少就我的情况而言，糟糕的图形性能就是因为这个原因。如果你认为这也与你的问题有关，你可以去投票，如下所示：如何投票（你必须的登录）。希望它能尽快得到修复。

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