Portal 2 Thinking with Time Machine - Protagonist displayed without textures

Processor Information:
Vendor: GenuineIntel
CPU Family: 0x6
CPU Model: 0x3c
CPU Stepping: 0x3
CPU Type: 0x0
Speed: 3900 Mhz
8 logical processors
4 physical processors
HyperThreading: Supported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Supported
SSE4a: Unsupported
SSE41: Supported
SSE42: Supported

Network Information:
Network Speed:

Operating System Version:
"Fedora release 20 (Heisenbug)" (64 bit)
Kernel Name: Linux
Kernel Version: 3.14.8-200.fc20.x86_64+debug
X Server Vendor: Fedora Project
X Server Release: 11404000
X Window Manager: GNOME Shell
Steam Runtime Version: steam-runtime-release_2014-04-15

Video Card:
Driver: Intel Open Source Technology Center Mesa DRI Intel(R) Haswell Desktop

Driver Version:  3.0 Mesa 10.1.5
OpenGL Version: 3.0
Desktop Color Depth: 24 bits per pixel
Monitor Refresh Rate: 60 Hz
VendorID:  0x8086
DeviceID:  0x412
Number of Monitors:  1
Number of Logical Video Cards:  1
Primary Display Resolution:  1920 x 1080
Desktop Resolution: 1920 x 1080
Primary Display Size: 20,04" x 11,26"  (22,95" diag)
                                        50,9cm x 28,6cm  (58,3cm diag)
Primary VRAM Not Detected

Sound card:
Audio device: Intel Haswell HDMI

Memory:
RAM: 31094 Mb

Miscellaneous:
UI Language: English
LANG: en_US.UTF-8
Microphone: Not set
Total Hard Disk Space Available: 3815446 Mb
Largest Free Hard Disk Block: 1296696 Mb

Installed software:

Recent Failure Reports:
Tue Jun 24 16:44:07 2014 GMT: file ''/tmp/dumps/assert_20140624224342_21.dmp'', upload yes: ''CrashID=bp-79956e89-41a4-4287-8a11-bb1ad2140624''