Find the answer to your Linux question:
Results 1 to 4 of 4
After a few weeks of Googling, forum searching, and a little source code reading, I finally decided to post a thread on this fine forum. My problem concerns Xorg freezing ...
Enjoy an ad free experience by logging in. Not a member yet? Register.
  1. #1
    Just Joined! eia_hunter's Avatar
    Join Date
    May 2006
    Location
    Arky-Saw, USA
    Posts
    5

    Xorg Unichrome DRI Freezes


    After a few weeks of Googling, forum searching, and a little source code reading, I finally decided to post a thread on this fine forum.

    My problem concerns Xorg freezing when running OpenGL applications using hardware acceleration, specifically direct rendering.

    Current configuration:

    Gentoo with Xorg7
    Code:
    # emerge xorg-x11
    [ebuild   R   ] x11-base/xorg-x11-7.0-r1
    INPUT_DEVICES="joystick keyboard mouse -acecad -aiptek -calcomp -citron 
    -digitaledge -dmc -dynapro -elo2300 -elographics -evdev -fpit -hyperpen 
    -jamstudio -magellan -magictouch -microtouch -mutouch -palmax -penmount 
    -spaceorb -summa -synaptics -tek4957 -ur98 -vmmouse -void -wacom" 
    VIDEO_CARDS="fbdev vesa vga via -apm -ark -chips -cirrus -cyrix -dummy 
    -fglrx -glint -i128 -i810 -mach64 -mga -neomagic -nv -nvidia -r128 -radeon 
    -rendition -s3 -s3virge -savage -siliconmotion -sis -sisusb -tdfx -tga -trident
    -tseng -v4l -vmware -voodoo" 0 kB
    Code:
    # uname -a
    Linux my_hostname 2.6.14-hardened-r8 #8 Fri May 26 22:07:20 CDT 2006
    x86_64 AMD Athlon(tm) 64 Processor 3000+ GNU/Linux
    Code:
    # lspci -v
    00:00.0 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
            Subsystem: VIA Technologies, Inc. K8M800 Host Bridge
            Flags: bus master, 66MHz, medium devsel, latency 8
            Memory at e8000000 (32-bit, prefetchable) [size=128M]
            Capabilities: [80] AGP version 3.0
            Capabilities: [50] Power Management version 2
            Capabilities: [60] HyperTransport: Slave or Primary Interface
            Capabilities: [58] HyperTransport: Interrupt Discovery and
    Configuration
    
    00:00.1 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
            Flags: bus master, medium devsel, latency 0
    
    00:00.2 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
            Flags: bus master, medium devsel, latency 0
    
    00:00.3 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
            Flags: bus master, medium devsel, latency 0
    
    00:00.4 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
            Flags: bus master, medium devsel, latency 0
    
    00:00.7 Host bridge: VIA Technologies, Inc. K8M800 Host Bridge
            Flags: bus master, medium devsel, latency 0
    
    00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI bridge 
    [K8T800/K8T890 South] (prog-if 00 [Normal decode])
            Flags: bus master, 66MHz, medium devsel, latency 0
            Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
            Memory behind bridge: f4000000-f5ffffff
            Prefetchable memory behind bridge: f0000000-f3ffffff
            Capabilities: [80] Power Management version 2
    
    00:08.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] 
    (rev 24)
            Subsystem: 3Com Corporation 3C905B Fast Etherlink XL 10/100
            Flags: bus master, medium devsel, latency 32, IRQ 20
            I/O ports at e200 [size=128]
            Memory at f6022000 (32-bit, non-prefetchable) [size=128]
            [virtual] Expansion ROM at 80000000 [disabled] [size=128K]
            Capabilities: [dc] Power Management version 1
    
    00:0f.0 IDE interface: VIA Technologies, Inc. VIA VT6420 SATA RAID 
    Controller (rev 80) (prog-if 8f [Master SecP SecO PriP PriO])
            Subsystem: Biostar Microtech Int'l Corp Unknown device 5300
            Flags: bus master, medium devsel, latency 32, IRQ 17
            I/O ports at e800 [size=8]
            I/O ports at e900 [size=4]
            I/O ports at ea00 [size=8]
            I/O ports at e000 [size=4]
            I/O ports at e100 [size=16]
            I/O ports at d000 [size=256]
            Capabilities: [c0] Power Management version 2
    
    00:0f.1 IDE interface: VIA Technologies, Inc. 
    VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
    (prog-if 8a [Master SecP PriP])
            Subsystem: Biostar Microtech Int'l Corp Unknown device 3206
            Flags: bus master, medium devsel, latency 32, IRQ 17
            I/O ports at e300 [size=16]
            Capabilities: [c0] Power Management version 2
    
    00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
    Controller (rev 81) (prog-if 00 [UHCI])
            Subsystem: Biostar Microtech Int'l Corp Unknown device 3206
            Flags: bus master, medium devsel, latency 32, IRQ 16
            I/O ports at e400 [size=32]
            Capabilities: [80] Power Management version 2
    
    00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
    Controller (rev 81) (prog-if 00 [UHCI])
            Subsystem: Biostar Microtech Int'l Corp Unknown device 3206
            Flags: bus master, medium devsel, latency 32, IRQ 16
            I/O ports at e500 [size=32]
            Capabilities: [80] Power Management version 2
    
    00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
    Controller (rev 81) (prog-if 00 [UHCI])
            Subsystem: Biostar Microtech Int'l Corp Unknown device 3206
            Flags: bus master, medium devsel, latency 32, IRQ 16
            I/O ports at e600 [size=32]
            Capabilities: [80] Power Management version 2
    
    00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
    Controller (rev 81) (prog-if 00 [UHCI])
            Subsystem: Biostar Microtech Int'l Corp Unknown device 3206
            Flags: bus master, medium devsel, latency 32, IRQ 16
            I/O ports at e700 [size=32]
            Capabilities: [80] Power Management version 2
    
    00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86) (prog-if 20 
    [EHCI])
            Subsystem: Biostar Microtech Int'l Corp Unknown device 3206
            Flags: bus master, medium devsel, latency 32, IRQ 16
            Memory at f6020000 (32-bit, non-prefetchable) [size=256]
            Capabilities: [80] Power Management version 2
    
    00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge 
    [KT600/K8T800/K8T890 South]
            Subsystem: Biostar Microtech Int'l Corp Unknown device 3206
            Flags: bus master, stepping, medium devsel, latency 0
            Capabilities: [c0] Power Management version 2
    
    00:11.5 Multimedia audio controller: VIA Technologies, Inc. 
    VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
            Subsystem: Biostar Microtech Int'l Corp Unknown device 8212
            Flags: medium devsel, IRQ 18
            I/O ports at d400 [size=256]
            Capabilities: [c0] Power Management version 2
    
    00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 78)
            Subsystem: VIA Technologies, Inc. VT6102 [Rhine II] Embeded Ethernet 
    Controller on VT8235
            Flags: bus master, medium devsel, latency 32, IRQ 19
            I/O ports at dc00 [size=256]
            Memory at f6021000 (32-bit, non-prefetchable) [size=256]
            Capabilities: [40] Power Management version 2
    
    00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
    HyperTransport Technology Configuration
            Flags: fast devsel
            Capabilities: [80] HyperTransport: Host or Secondary Interface
    
    00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
    Address Map
            Flags: fast devsel
    
    00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
    DRAM Controller
            Flags: fast devsel
    
    00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] 
    Miscellaneous Control
            Flags: fast devsel
    
    01:00.0 VGA compatible controller: VIA Technologies, Inc. S3 Unichrome Pro 
    VGA Adapter (rev 01) (prog-if 00 [VGA])
            Subsystem: Biostar Microtech Int'l Corp Unknown device 1203
            Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 5
            Memory at f0000000 (32-bit, prefetchable) [size=64M]
            Memory at f4000000 (32-bit, non-prefetchable) [size=16M]
            [virtual] Expansion ROM at f5000000 [disabled] [size=64K]
            Capabilities: [60] Power Management version 2
            Capabilities: [70] AGP version 3.0
    Originally, I left DRI disabled. The system was stable, but the framerate from glxgears (default dimension, uncovered) averaged 90 FPS; in addition, it consumed 100% of the CPU. I then compiled DRM with Unichrome from the kernel source as modules. Running glxgears resulted in an oops:

    Code:
    May 26 21:46:23 [kernel] Unable to handle kernel paging request at 
    0000000079604ea8 RIP:
    May 26 21:46:23 [kernel] <ffffffff8823ae4c>{:via:via_mmFreeMem+12}
    May 26 21:46:23 [kernel] RIP <ffffffff8823ae4c>{:via:via_mmFreeMem+12} 
    RSP <ffff810077d2be28>
    May 26 21:46:23 [kernel] <ffffffff8823ae4c>{:via:via_mmFreeMem+12}
    May 26 21:46:23 [kernel] RIP <ffffffff8823ae4c>{:via:via_mmFreeMem+12} 
    RSP <ffff810077d2baa8>
    I removed the drm.ko and via.ko and emerged x11-drm-20051223. Running glxgears averaged 560FPS, 100% CPU. Running a second instance of glxgears (both uncovered) averaged 130FPS, 100% CPU (plus, the gear movement alternated between the two instances). Worse yet, when I bring up a KDE OpenGL screensaver in a preview and run glxgears, Xorg freezes; however, if I have an SSH session already setup on another machine, I can run "top" and see that X is consuming 100% of the CPU. From there, I have to reboot completely; killing X has no effect.

    I've made a few attempts to follow through the following link, but I kept getting "undefined symbol" errors when loading the VIA driver from xf86-video-unichrome.

    http://unichrome.sourceforge.net/

    After removing "!x86_64" for AGP_VIA in Kconfig and disabling GART_IOMMU, I've tried loading via-agp instead of amd64-agp, but dmesg reported "no agp memory". Consequently, glxgears then averaged 480FPS, 100% CPU, freeze-ups still occurred. I also disabled agpgart only to get the same 480FPS result.

    I doubt there are any hardware problems because it is a new machine. Of course it could be defective, but I'd like to leave that thought to the side.

  2. #2
    Just Joined! eia_hunter's Avatar
    Join Date
    May 2006
    Location
    Arky-Saw, USA
    Posts
    5
    More system info (ran out of characters in the first post):

    Code:
    # cat /proc/cpuinfo
    processor       : 0
    vendor_id       : AuthenticAMD
    cpu family      : 15
    model           : 44
    model name      : AMD Athlon(tm) 64 Processor 3000+
    stepping        : 2
    cpu MHz         : 1999.841
    cache size      : 512 KB
    fpu             : yes
    fpu_exception   : yes
    cpuid level     : 1
    wp              : yes
    flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca 
    cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm 
    3dnowext 3dnow pni lahf_lm
    bogomips        : 4009.28
    TLB size        : 1024 4K pages
    clflush size    : 64
    cache_alignment : 64
    address sizes   : 40 bits physical, 48 bits virtual
    power management: ts fid vid ttp tm stc
    Code:
    # cat /proc/mtrr
    reg00: base=0x00000000 (   0MB), size=1024MB: write-back, count=1
    reg01: base=0x40000000 (1024MB), size= 512MB: write-back, count=1
    reg02: base=0x60000000 (1536MB), size= 256MB: write-back, count=1
    reg03: base=0x70000000 (1792MB), size= 128MB: write-back, count=1
    reg04: base=0x78000000 (1920MB), size=  64MB: write-back, count=1
    reg05: base=0x7bf00000 (1983MB), size=   1MB: uncachable, count=1
    reg06: base=0xe8000000 (3712MB), size= 128MB: write-combining, count=1
    Code:
    # cat /etc/X11/xorg.conf (Comments excluded)
    Section "Module"
        Load        "dbe"
        SubSection  "extmod"
          Option    "omit xfree86-dga"
        EndSubSection
        Load        "freetype"
        Load       "glx"
        Load       "dri"
    EndSection
    
    Section "Files"
        FontPath   "/usr/share/fonts/misc"
        FontPath   "/usr/share/fonts/75dpi"
        FontPath   "/usr/share/fonts/100dpi"
        FontPath   "/usr/share/fonts/Type1"
    EndSection
    
    Section "ServerFlags"
    EndSection
    
    Section "InputDevice"
        Identifier  "Keyboard1"
        Driver      "kbd"
        Option "AutoRepeat" "500 30"
        Option "XkbRules"   "xorg"
        Option "XkbModel"   "pc104"
        Option "XkbLayout"  "us"
    EndSection
    
    Section "InputDevice"
        Identifier  "Mouse1"
        Driver      "mouse"
        Option "Protocol"    "IMPS/2"
        Option "Device"      "/dev/input/mice"
        Option "Buttons"   "5"
        Option "ZAxisMapping"   "4 5"
    EndSection
    
    Section "Monitor"
        Identifier  "CMV CT-934D"
        HorizSync   31.5 - 82.0
        VertRefresh 56-76
    EndSection
    
    Section "Device"
        Identifier  "Via Unichrome"
        Driver      "via"
        Option     "DisableIRQ" "Yes"
        Option     "EnableAGPDMA" "Yes"
    EndSection
    
    Section "Screen"
        Identifier  "Screen 1"
        Device      "Via Unichrome"
        Monitor     "CMV CT-934D"
        DefaultDepth 24
    
        Subsection "Display"
            Depth       8
            Modes       "1280x1024" "1024x768" "800x600" "640x480"
            ViewPort    0 0
        EndSubsection
        Subsection "Display"
            Depth       16
            Modes       "1280x1024" "1024x768" "800x600" "640x480"
            ViewPort    0 0
        EndSubsection
        Subsection "Display"
            Depth       24
            Modes       "1280x1024" "1024x768" "800x600" "640x480"
            ViewPort    0 0
        EndSubsection
    EndSection
    
    Section "ServerLayout"
        Identifier  "Simple Layout"
        Screen "Screen 1"
        InputDevice "Mouse1" "CorePointer"
        InputDevice "Keyboard1" "CoreKeyboard"
    EndSection
    
    Section "DRI"
       Mode 0666
    EndSection

  3. #3
    Just Joined! eia_hunter's Avatar
    Join Date
    May 2006
    Location
    Arky-Saw, USA
    Posts
    5
    I thought this might be helpful.

    When I was running "top", I noticed that the CPU header information differs whether or not "EnableAGPDMA" is passed to the VIA Xorg driver. In both cases, "top" reports glxgears consuming 100% of the CPU. Without "EnableAGPDMA", 65% of the CPU usage is non-kernel code and 35% is kernel code. With "EnableAGPDMA", it's 10% non-kernel, 90% kernel. If glxgears is covered/minimized in both cases, it's 95% non-kernel.

    I take it that using "EnableAGPDMA" tells the VIA Xorg driver to offload to the AGP kernel modules (agpgart and amd64-agp). If that's the case, does that mean that the AGP kernel modules are consuming CPU resources, blocking off other processes? Does "top" consider utilizing the AMD64 on-chip GART feature as "cpu usage"?

    Code:
    # glxinfo -v
    name of display: :0.0
    __driCreateNewScreen_20050727 - succeeded
    display: :0  screen: 0
    direct rendering: Yes
    server glx vendor string: SGI
    server glx version string: 1.2
    server glx extensions:
        GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
        GLX_EXT_import_context, GLX_OML_swap_method, 
        GLX_SGI_make_current_read, GLX_SGIS_multisample,   
        GLX_SGIX_hyperpipe, GLX_SGIX_swap_barrier, GLX_SGIX_fbconfig
    client glx vendor string: SGI
    client glx version string: 1.4
    client glx extensions:
        GLX_ARB_get_proc_address, GLX_ARB_multisample, 
        GLX_EXT_import_context, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
        GLX_MESA_allocate_memory, GLX_MESA_swap_control, 
        GLX_MESA_swap_frame_usage, GLX_OML_swap_method, 
        GLX_OML_sync_control, GLX_SGI_make_current_read, 
        GLX_SGI_swap_control, GLX_SGI_video_sync, GLX_SGIS_multisample, 
        GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group
    GLX version: 1.2
    GLX extensions:
        GLX_ARB_get_proc_address, GLX_ARB_multisample, 
        GLX_EXT_import_context, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
        GLX_MESA_swap_control, GLX_MESA_swap_frame_usage, 
        GLX_OML_swap_method, GLX_SGI_video_sync,     
        GLX_SGIS_multisample, GLX_SGIX_fbconfig
    OpenGL vendor string: VIA Technology
    OpenGL renderer string: Mesa DRI UniChrome (K8M800) 20050526
    OpenGL version string: 1.2 Mesa 6.4.2
    OpenGL extensions:
        GL_ARB_imaging, GL_ARB_multisample, GL_ARB_multitexture, 
        GL_ARB_point_parameters, GL_ARB_texture_env_add, 
        GL_ARB_texture_env_combine, GL_ARB_texture_mirrored_repeat, 
        GL_ARB_transpose_matrix, GL_ARB_window_pos, GL_EXT_abgr, 
        GL_EXT_bgra, GL_EXT_blend_color, GL_EXT_blend_minmax, 
        GL_EXT_blend_subtract, GL_EXT_clip_volume_hint, 
        GL_EXT_compiled_vertex_array, GL_EXT_convolution, 
        GL_EXT_copy_texture, GL_EXT_draw_range_elements, 
        GL_EXT_fog_coord, GL_EXT_histogram, GL_EXT_packed_pixels, 
        GL_EXT_point_parameters, GL_EXT_polygon_offset, 
        GL_EXT_rescale_normal, GL_EXT_secondary_color, 
        GL_EXT_separate_specular_color, GL_EXT_stencil_wrap, 
        GL_EXT_subtexture, GL_EXT_texture, GL_EXT_texture3D, 
        GL_EXT_texture_edge_clamp, GL_EXT_texture_env_add, 
        GL_EXT_texture_env_combine, GL_EXT_texture_lod_bias, 
        GL_EXT_texture_object, GL_EXT_vertex_array, 
        GL_APPLE_packed_pixels, GL_IBM_rasterpos_clip, 
        GL_IBM_texture_mirrored_repeat, GL_MESA_window_pos, 
        GL_NV_blend_square, GL_NV_light_max_exponent, 
        GL_NV_texgen_reflection, GL_OES_read_format, 
        GL_SGI_color_matrix, GL_SGI_color_table, GL_SGIS_texture_edge_clamp,
        GL_SGIS_texture_lod
    glu version: 1.3
    glu extensions:
        GLU_EXT_nurbs_tessellator, GLU_EXT_object_space_tess
    
    Visual ID: 22  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=1 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=24 stencilSize=8
        accum: redSize=0 greenSize=0 blueSize=0 alphaSize=0
        multiSample=0  multiSampleBuffers=0
        visualCaveat=None
        Opaque.
    Visual ID: 23  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=0 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=24 stencilSize=8
        accum: redSize=0 greenSize=0 blueSize=0 alphaSize=0
        multiSample=0  multiSampleBuffers=0
        visualCaveat=None
        Opaque.
    Visual ID: 24  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=1 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=16 stencilSize=0
        accum: redSize=0 greenSize=0 blueSize=0 alphaSize=0
        multiSample=0  multiSampleBuffers=0
        visualCaveat=None
        Opaque.
    Visual ID: 25  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=0 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=16 stencilSize=0
        accum: redSize=0 greenSize=0 blueSize=0 alphaSize=0
        multiSample=0  multiSampleBuffers=0
        visualCaveat=None
        Opaque.
    Visual ID: 26  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=1 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=0 stencilSize=0
        accum: redSize=0 greenSize=0 blueSize=0 alphaSize=0
        multiSample=0  multiSampleBuffers=0
        visualCaveat=None
        Opaque.
    Visual ID: 27  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=0 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=0 stencilSize=0
        accum: redSize=0 greenSize=0 blueSize=0 alphaSize=0
        multiSample=0  multiSampleBuffers=0
        visualCaveat=None
        Opaque.
    Visual ID: 28  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=1 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=24 stencilSize=8
        accum: redSize=16 greenSize=16 blueSize=16 alphaSize=16
        multiSample=0  multiSampleBuffers=0
        visualCaveat=Slow
        Opaque.
    Visual ID: 29  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=0 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=24 stencilSize=8
        accum: redSize=16 greenSize=16 blueSize=16 alphaSize=16
        multiSample=0  multiSampleBuffers=0
        visualCaveat=Slow
        Opaque.
    Visual ID: 2a  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=1 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=16 stencilSize=0
        accum: redSize=16 greenSize=16 blueSize=16 alphaSize=16
        multiSample=0  multiSampleBuffers=0
        visualCaveat=Slow
        Opaque.
    Visual ID: 2b  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=0 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=16 stencilSize=0
        accum: redSize=16 greenSize=16 blueSize=16 alphaSize=16
        multiSample=0  multiSampleBuffers=0
        visualCaveat=Slow
        Opaque.
    Visual ID: 2c  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=1 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=0 stencilSize=0
        accum: redSize=16 greenSize=16 blueSize=16 alphaSize=16
        multiSample=0  multiSampleBuffers=0
        visualCaveat=Slow
        Opaque.
    Visual ID: 2d  depth=24  class=TrueColor
        bufferSize=32 level=0 renderType=rgba doubleBuffer=0 stereo=0
        rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
        auxBuffers=0 depthSize=0 stencilSize=0
        accum: redSize=16 greenSize=16 blueSize=16 alphaSize=16
        multiSample=0  multiSampleBuffers=0
        visualCaveat=Slow
        Opaque.

  4. #4
    Just Joined! eia_hunter's Avatar
    Join Date
    May 2006
    Location
    Arky-Saw, USA
    Posts
    5
    Maybe this problem isn't as serious as I thought. It seems that only certain screensavers combined wtih glxgears eats up the CPU, as if they're niced with -20. I can barely switch terminals in order to kill the offending processes.

    The software I've tested that freezes my system are:
    glxgears + keuphoria.kss (even at a 19 nice level)
    xscreensaver/flipscreen3d
    xscreensaver/gflux (grab)

    Software that works surprisingly well are:
    tuxracer
    keuphoria.kss times 3

    As unstable DRI is, I can see why there is a "Mode" setting under the DRI section in xorg.conf. It wouldn't be good that a normal user can freeze-up the system by running a screensaver.

    I also noticed /etc/drirc and ~/.drirc as a way of enabling/disabling hardware acceleration for certain applications using "no_rast = true". Maybe I'll take this approach, denying users write-access to their own ~/.drirc, along with creating a group with DRI privileges.

    Thanks for your response. Oh wait! Nobody replied!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •