TF2 cannot start on my Gentoo x64

[Loki]

Team Fortress 2 cannot start on my Gentoo linux.
It crashes after the loading screen.
I've searched almost all about the issues but they all don't work.
I need help!

My PC info:
Gentoo x64
nvidia GTX560 Ti

This is the log:

Running Steam on gentoo  64-bit
STEAM_RUNTIME is enabled automatically
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 78: saw unknown, expected number
[0301/042946:ERROR:bus.cc(261)] Failed to connect to the bus: Failed to connect to socket /var/run/dbus/system_bus_socket: # # # # # # # # # 
[0301/042946:ERROR:bus.cc(261)] Failed to connect to the bus: Failed to connect to socket /var/run/dbus/system_bus_socket: # # # # # # # # # 
[0301/042946:WARNING:proxy_service.cc(958)] PAC support disabled because there is no system implementation
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Installing breakpad exception handler for appid(steam)/version(1393366296_client)

** (steam:20513): WARNING **: Couldn't connect to system bus: Failed to connect to socket /var/run/dbus/system_bus_socket: # # # # # # # # # 
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
PulseAudio connect failed (used only for Mic Volume Control) with error: Access denied
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Generating new string page texture 2: 48x256, total string texture memory is 49.15 KB
Generating new string page texture 3: 256x256, total string texture memory is 311.30 KB
Installing breakpad exception handler for appid(steam)/version(1393366296_client)

(steam:20513): Gtk-WARNING **: # # # # # # # # # # # # # # : "qtcurve", 
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Adding licenses for the following package(s): 0, 25507, 38900, 39298
roaming config store loaded successfully - 1054 bytes.
migrating temporary roaming config store
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
sh: lspci: # # # # # 
ExecCommandLine: "/home/rothsdad/.local/share/Steam/ubuntu12_32/steam steam://rungameid/440"
ExecSteamURL: "steam://rungameid/440"
System startup time: 14.78 seconds
OnFocusWindowChanged to window type: k_EWindowTypeSteamDesktop, 0
Running Steam on gentoo  64-bit
STEAM_RUNTIME has been set by the user to: /home/rothsdad/.local/share/Steam/ubuntu12_32/steam-runtime
ExecCommandLine: "/home/rothsdad/.steam/root/ubuntu12_32/steam steam://open/driverhelperready"
ExecSteamURL: "steam://open/driverhelperready"

(steam:20513): LIBDBUSMENU-GLIB-WARNING **: Trying to remove a child that doesn't believe we're it's parent.
ERROR: ld.so: object '/home/rothsdad/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded: ignored.
pid 20642 != 20641, skipping destruction (fork without exec?)
ERROR: ld.so: object '/home/rothsdad/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded: ignored.
ERROR: ld.so: object '/home/rothsdad/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded: ignored.
CGameStreamThread: Added instance ID 20641 for appid 440
CGameStreamThread: Added instance ID 20643 for appid 440
SDL video target is 'x11'
SDL video target is 'x11'
CGameStreamThread: Added instance ID 20644 for appid 440
Installing breakpad exception handler for appid(gameoverlayui)/version(20140225134510_client)
Installing breakpad exception handler for appid(gameoverlayui)/version(1.0_client)
CGameStreamThread: Set render instance ID 20644 for appid 440
OnFocusWindowChanged to window type: k_EWindowTypeNonSteamDesktop, 0
Installing breakpad exception handler for appid(gameoverlayui)/version(1.0_client)
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 78: saw unknown, expected number
[0301/043003:ERROR:bus.cc(261)] Failed to connect to the bus: Failed to connect to socket /var/run/dbus/system_bus_socket: # # # # # # # # # 
[0301/043003:ERROR:bus.cc(261)] Failed to connect to the bus: Failed to connect to socket /var/run/dbus/system_bus_socket: # # # # # # # # # 
[0301/043003:WARNING:proxy_service.cc(958)] PAC support disabled because there is no system implementation
Installing breakpad exception handler for appid(gameoverlayui)/version(1.0_client)
Using breakpad crash handler
Setting breakpad minidump AppID = 440
Forcing breakpad minidump interfaces to load
Looking up breakpad interfaces from steamclient
Calling BreakpadMiniDumpSystemInit
Looking up breakpad interfaces from steamclient
Calling BreakpadMiniDumpSystemInit
Steam_SetMinidumpSteamID:  Caching Steam ID:  76561198082437394 [API loaded yes]
Steam_SetMinidumpSteamID:  Setting Steam ID:  76561198082437394
[0301/043006:ERROR:bus.cc(261)] Failed to connect to the bus: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory
[0301/043006:ERROR:bus.cc(261)] Failed to connect to the bus: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory
[0301/043006:WARNING:proxy_service.cc(958)] PAC support disabled because there is no system implementation
This system supports the OpenGL extension GL_EXT_framebuffer_object.
This system supports the OpenGL extension GL_EXT_framebuffer_blit.
This system supports the OpenGL extension GL_EXT_framebuffer_multisample.
This system DOES NOT support the OpenGL extension GL_APPLE_fence.
This system supports the OpenGL extension GL_NV_fence.
This system supports the OpenGL extension GL_ARB_sync.
This system supports the OpenGL extension GL_EXT_draw_buffers2.
This system supports the OpenGL extension GL_EXT_bindable_uniform.
This system DOES NOT support the OpenGL extension GL_APPLE_flush_buffer_range.
This system supports the OpenGL extension GL_ARB_map_buffer_range.
This system supports the OpenGL extension GL_ARB_vertex_buffer_object.
This system supports the OpenGL extension GL_ARB_occlusion_query.
This system DOES NOT support the OpenGL extension GL_APPLE_texture_range.
This system DOES NOT support the OpenGL extension GL_APPLE_client_storage.
This system DOES NOT support the OpenGL extension GL_ARB_uniform_buffer.
This system supports the OpenGL extension GL_ARB_vertex_array_bgra.
This system supports the OpenGL extension GL_EXT_vertex_array_bgra.
This system supports the OpenGL extension GL_ARB_framebuffer_object.
This system DOES NOT support the OpenGL extension GL_GREMEDY_string_marker.
This system supports the OpenGL extension GL_ARB_debug_output.
This system supports the OpenGL extension GL_EXT_direct_state_access.
This system DOES NOT support the OpenGL extension GL_NV_bindless_texture.
This system DOES NOT support the OpenGL extension GL_AMD_pinned_memory.
This system supports the OpenGL extension GL_EXT_framebuffer_multisample_blit_scaled.
This system supports the OpenGL extension GL_EXT_texture_sRGB_decode.
This system supports the OpenGL extension GL_NVX_gpu_memory_info.
This system DOES NOT support the OpenGL extension GL_ATI_meminfo.
This system supports the OpenGL extension GL_EXT_texture_compression_s3tc.
This system supports the OpenGL extension GL_EXT_texture_compression_dxt1.
This system DOES NOT support the OpenGL extension GL_ANGLE_texture_compression_dxt3.
This system DOES NOT support the OpenGL extension GL_ANGLE_texture_compression_dxt5.
This system supports the OpenGL extension GLX_EXT_swap_control_tear.
GL_NV_bindless_texture: DISABLED
GL_AMD_pinned_memory: DISABLED
GL_EXT_texture_sRGB_decode: AVAILABLE
GL_NVX_gpu_memory_info: AVAILABLE
GL_ATI_meminfo: UNAVAILABLE
GL_NVX_gpu_memory_info: Total Dedicated: 1048576, Total Avail: 1048576, Current Avail: 967176
GL_MAX_SAMPLES_EXT: 32
CShaderDeviceMgrBase::GetRecommendedConfigurationInfo: CPU speed: 3301 MHz, Processor: GenuineIntel
GlobalMemoryStatus: 4294967295
CShaderDeviceMgrBase::GetRecommendedConfigurationInfo: CPU speed: 3301 MHz, Processor: GenuineIntel
GlobalMemoryStatus: 4294967295
IDirect3DDevice9::Create: BackBufWidth: 800, BackBufHeight: 600, D3DFMT: 3, BackBufCount: 1, MultisampleType: 0, MultisampleQuality: 0
GL sampler object usage: ENABLED
GL prefer MapBufferRange: NO

 ##### swap interval = 0     swap limit = 1 #####
OnFocusWindowChanged to window type: k_EWindowTypeGame, 440
Loaded program cache file "glbaseshaders.cfg", total keyvalues: 266, total successfully linked: 266
Loaded program cache file "glshaders.cfg", total keyvalues: 266, total successfully linked: 266
Precache: Took 749 ms, Vertex 864, Pixel 1367
server.so loaded for "Team Fortress"
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 78: saw unknown, expected number
ALSA lib pcm.c:7339:(snd_pcm_recover) underrun occurred
ERROR: ld.so: object '/home/rothsdad/.local/share/Steam/ubuntu12_64/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded: ignored.
Uploading dump (out-of-process) [proxy '']
/tmp/dumps/crash_20140301043003_1.dmp
CGameStreamThread: Added instance ID 20724 for appid 440
/home/rothsdad/.local/share/Steam/SteamApps/common/Team Fortress 2/hl2.sh: #  67: 20644 # # #                ${GAME_DEBUGGER} "${GAMEROOT}"/${GAMEEXE} "$@"
Game removed: AppID 440 "Team Fortress 2", ProcID 20644 
OnFocusWindowChanged to window type: k_EWindowTypeNonSteamDesktop, 0
Finished uploading minidump (out-of-process): success = yes
response: CrashID=bp-d74239a5-3ecf-4960-bc50-c4fde2140228
pid 20726 != 20724, skipping destruction (fork without exec?)

[Loki]

I can run Dota2 perfect, so I think it's TF2's problem.
I also tryed 'SDL_AUDIODRIVER=alsa steam', didn't work.

[Kranky K. Krackpot]

ALSA lib pcm.c:7339:(snd_pcm_recover) underrun occurred

Looks like it doesn't like buffer size. Do you use PA? What's your soundcard? If it's onboard Intel HDA's Realtek, tweaking kernel for larger buffer size might help:

config SND_HDA_PREALLOC_SIZE
int "Pre-allocated buffer size for HD-audio driver"
range 0 32768
default 64
help
Specifies the default pre-allocated buffer-size in kB for the
HD-audio driver. A larger buffer (e.g. 2048) is preferred
for systems using PulseAudio. The default 64 is chosen just
for compatibility reasons.

Note that the pre-allocation size can be changed dynamically
via a proc file (/proc/asound/card*/pcm*/sub*/prealloc), too.

[Loki]

Αναρτήθηκε αρχικά από Kranky K. Krackpot:

ALSA lib pcm.c:7339:(snd_pcm_recover) underrun occurred

Looks like it doesn't like buffer size. Do you use PA? What's your soundcard? If it's onboard Intel HDA's Realtek, tweaking kernel for larger buffer size might help:

config SND_HDA_PREALLOC_SIZE
int "Pre-allocated buffer size for HD-audio driver"
range 0 32768
default 64
help
Specifies the default pre-allocated buffer-size in kB for the
HD-audio driver. A larger buffer (e.g. 2048) is preferred
for systems using PulseAudio. The default 64 is chosen just
for compatibility reasons.

Note that the pre-allocation size can be changed dynamically
via a proc file (/proc/asound/card*/pcm*/sub*/prealloc), too.

my soundcard:

 lspci | grep Audio
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset  (rev 04)
01:00.1 Audio device: NVIDIA Corporation GF114 HDMI Audio Controller

buffer:

cat /proc/asound/card0/pcm0p/sub0/hw_params
access: MMAP_INTERLEAVED
format: S32_LE
subformat: STD
channels: 2
rate: 48000 (48000/1)
period_size: 1024
buffer_size: 8192

Can I treak it in ~/.asoundrc? and how?

[Kranky K. Krackpot]

Seems you do have onboard Intel HDA connected Nvidia's HDMI.
Yes, it's possible to tweak buffer size in asoundrc, but right now I don't remember how exactly it can be done. Generally, in asoundrc you need to create a pcm with new buffer size. Try something like this (I write from memory, so it may need adjusting):

pcm.!default {
type plug
slave "dmixer"
}

pcm.dmixer {
type dmix
ipc_key 1234
slave {
pcm "hw:0"
buffer_size 16384
}
}

It creates a software mixer, try it with different sizes like 1024, 2048, 4096, 16384
Here about pcm plugins http://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html
And Gentoo wiki http://wiki.gentoo.org/wiki/ALSA

Actually, alsa's problems shouldn't crash the game, I wonder if it's really the reason.

[Loki]

I've just installed pulseaudio, and the "alsa underrun" problem is solved.
But TF2 still crashes after the loading screen. (auto exit everytime after loading screen)

This is the new log:

Running Steam on gentoo  64-bit
STEAM_RUNTIME is enabled automatically
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 78: saw unknown, expected number
[0303/023443:ERROR:object_proxy.cc(239)] Failed to call method: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.NetworkManager was not provided by any .service files
[0303/023443:WARNING:proxy_service.cc(958)] PAC support disabled because there is no system implementation
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Installing breakpad exception handler for appid(steam)/version(1393366296_client)

** (steam:21688): WARNING **: Could not initialize NMClient /org/freedesktop/NetworkManager: The name org.freedesktop.NetworkManager was not provided by any .service files

** (steam:21688): WARNING **: _nm_remote_settings_ensure_inited: (NMRemoteSettings) error initializing: The name org.freedesktop.NetworkManager was not provided by any .service files

Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Generating new string page texture 2: 48x256, total string texture memory is 49.15 KB
Generating new string page texture 3: 256x256, total string texture memory is 311.30 KB
Installing breakpad exception handler for appid(steam)/version(1393366296_client)

(steam:21688): Gtk-WARNING **: # # # # # # # # # # # # # # : "qtcurve", 
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
Adding licenses for the following package(s): 0, 25507, 38900, 39298
roaming config store loaded successfully - 1054 bytes.
migrating temporary roaming config store
Installing breakpad exception handler for appid(steam)/version(1393366296_client)
sh: lspci: # # # # # 
ExecCommandLine: "/home/rothsdad/.local/share/Steam/ubuntu12_32/steam steam://rungameid/440"
ExecSteamURL: "steam://rungameid/440"
System startup time: 14.83 seconds
OnFocusWindowChanged to window type: k_EWindowTypeSteamDesktop, 0
Running Steam on gentoo  64-bit
STEAM_RUNTIME has been set by the user to: /home/rothsdad/.local/share/Steam/ubuntu12_32/steam-runtime
ExecCommandLine: "/home/rothsdad/.steam/root/ubuntu12_32/steam steam://open/driverhelperready"
ExecSteamURL: "steam://open/driverhelperready"
Game update: AppID 440 "Team Fortress 2", ProcID 21801, IP 0.0.0.0:0
CGameStreamThread: Added instance ID 21801 for appid 440
CGameStreamThread: Set render instance ID 21801 for appid 440
SDL video target is 'x11'
SDL video target is 'x11'
OnFocusWindowChanged to window type: k_EWindowTypeNonSteamDesktop, 0
Using breakpad crash handler
Setting breakpad minidump AppID = 440
Forcing breakpad minidump interfaces to load
Looking up breakpad interfaces from steamclient
Calling BreakpadMiniDumpSystemInit
Looking up breakpad interfaces from steamclient
Calling BreakpadMiniDumpSystemInit
Steam_SetMinidumpSteamID:  Caching Steam ID:  76561198082437394 [API loaded yes]
Steam_SetMinidumpSteamID:  Setting Steam ID:  76561198082437394
[0303/023503:ERROR:object_proxy.cc(239)] Failed to call method: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.NetworkManager was not provided by any .service files
[0303/023503:WARNING:proxy_service.cc(958)] PAC support disabled because there is no system implementation
This system supports the OpenGL extension GL_EXT_framebuffer_object.
This system supports the OpenGL extension GL_EXT_framebuffer_blit.
This system supports the OpenGL extension GL_EXT_framebuffer_multisample.
This system DOES NOT support the OpenGL extension GL_APPLE_fence.
This system supports the OpenGL extension GL_NV_fence.
This system supports the OpenGL extension GL_ARB_sync.
This system supports the OpenGL extension GL_EXT_draw_buffers2.
This system supports the OpenGL extension GL_EXT_bindable_uniform.
This system DOES NOT support the OpenGL extension GL_APPLE_flush_buffer_range.
This system supports the OpenGL extension GL_ARB_map_buffer_range.
This system supports the OpenGL extension GL_ARB_vertex_buffer_object.
This system supports the OpenGL extension GL_ARB_occlusion_query.
This system DOES NOT support the OpenGL extension GL_APPLE_texture_range.
This system DOES NOT support the OpenGL extension GL_APPLE_client_storage.
This system DOES NOT support the OpenGL extension GL_ARB_uniform_buffer.
This system supports the OpenGL extension GL_ARB_vertex_array_bgra.
This system supports the OpenGL extension GL_EXT_vertex_array_bgra.
This system supports the OpenGL extension GL_ARB_framebuffer_object.
This system DOES NOT support the OpenGL extension GL_GREMEDY_string_marker.
This system supports the OpenGL extension GL_ARB_debug_output.
This system supports the OpenGL extension GL_EXT_direct_state_access.
This system DOES NOT support the OpenGL extension GL_NV_bindless_texture.
This system DOES NOT support the OpenGL extension GL_AMD_pinned_memory.
This system supports the OpenGL extension GL_EXT_framebuffer_multisample_blit_scaled.
This system supports the OpenGL extension GL_EXT_texture_sRGB_decode.
This system supports the OpenGL extension GL_NVX_gpu_memory_info.
This system DOES NOT support the OpenGL extension GL_ATI_meminfo.
This system supports the OpenGL extension GL_EXT_texture_compression_s3tc.
This system supports the OpenGL extension GL_EXT_texture_compression_dxt1.
This system DOES NOT support the OpenGL extension GL_ANGLE_texture_compression_dxt3.
This system DOES NOT support the OpenGL extension GL_ANGLE_texture_compression_dxt5.
This system supports the OpenGL extension GLX_EXT_swap_control_tear.
GL_NV_bindless_texture: DISABLED
GL_AMD_pinned_memory: DISABLED
GL_EXT_texture_sRGB_decode: AVAILABLE
GL_NVX_gpu_memory_info: AVAILABLE
GL_ATI_meminfo: UNAVAILABLE
GL_NVX_gpu_memory_info: Total Dedicated: 1048576, Total Avail: 1048576, Current Avail: 958992
GL_MAX_SAMPLES_EXT: 32
CShaderDeviceMgrBase::GetRecommendedConfigurationInfo: CPU speed: 3301 MHz, Processor: GenuineIntel
GlobalMemoryStatus: 4294967295
CShaderDeviceMgrBase::GetRecommendedConfigurationInfo: CPU speed: 3301 MHz, Processor: GenuineIntel
GlobalMemoryStatus: 4294967295
IDirect3DDevice9::Create: BackBufWidth: 1920, BackBufHeight: 1080, D3DFMT: 3, BackBufCount: 1, MultisampleType: 0, MultisampleQuality: 0
GL sampler object usage: ENABLED
GL prefer MapBufferRange: NO

 ##### swap interval = 0     swap limit = 1 #####
Loaded program cache file "glbaseshaders.cfg", total keyvalues: 266, total successfully linked: 266
Loaded program cache file "glshaders.cfg", total keyvalues: 425, total successfully linked: 425
Precache: Took 1074 ms, Vertex 997, Pixel 1701
server.so loaded for "Team Fortress"
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 78: saw unknown, expected number
Uploading dump (out-of-process) [proxy '']
/tmp/dumps/crash_20140303023501_1.dmp
/home/rothsdad/.local/share/Steam/SteamApps/common/Team Fortress 2/hl2.sh: #  67: 21805 # # #                ${GAME_DEBUGGER} "${GAMEROOT}"/${GAMEEXE} "$@"
Game removed: AppID 440 "Team Fortress 2", ProcID 21805 

[Loki]

These are what I find in "/tmp/dumps/crash_20140303023501_1.dmp":

23(20.263204):  Advanced Joystick settings initialized
22(20.263201):  JOY_AXIS_V:  unmapped
21(20.263198):  JOY_AXIS_U:  mapped to Side (absolute)
20(20.263195):  JOY_AXIS_R:  mapped to Forward (absolute)
19(20.263192):  JOY_AXIS_Z:  unmapped
18(20.263188):  JOY_AXIS_Y:  mapped to Look (absolute)
17(20.263182):  JOY_AXIS_X:  mapped to Turn (absolute)
16(20.261460):  Loading default settings for high sensitivity
15(19.905189):  Replay cleanup done.
14(19.905178):  Cleaning up unneeded replay block data...
13(19.904985):  succeeded.
12(19.904941):  Replay: Starting thread pool with 1 threads...11(19.904939):  succeeded.
10(19.904930):  Replay: Creating thread pool...9(17.460057):  CClientSteamContext logged on = 1
8(17.215754):  Steam config directory: /home/rothsdad/.local/share/Steam/SteamApps/common/Team Fortress 2/platform/config
7(17.070552):  Error: Material "___debugdepth_4" uses unknown shader "DebugDepth"
6(17.070509):  Error: Material "___debugdepth_3" uses unknown shader "DebugDepth"
5(17.070465):  Error: Material "___debugdrawenvmapmask_2" uses unknown shader "DebugDrawEnvmapMask"
4(17.070414):  Error: Material "___debugnormalmap_1" uses unknown shader "DebugNormalMap"
3(17.070316):  Error: Material "___fillrate_0" uses unknown shader "FillRate"
2(16.886142):  Error: Material "debug/debugluxels" uses unknown shader "DebugLuxels"
1(16.847280):  maxplayers set to 24

[Kranky K. Krackpot]

Hmm, honestly at the moment I have no idea... How exactly did you install Steam and Nvidia driver, do other games work? Do you have libtxc_dxtn installed? Installing corefonts might be helpfull too. Also try to add "-novid" to game's launch options.