Is possible it could be caused by mouse movement or it is rather graphical issue?
Try disabling VSync in game as well as in graphics settings in system.
@ZeXx86 -
VSync was/is set Always Off in catalyst (had to, as Compiz has issues otherwise), as well as disabled in CS:S.
@Majkl578 -
It just might be. Like I said, I have VSync forced off on my laptop, so I don't know about the input lag referenced in that bug. I'll try that later today.
Any chance to disable compiz? Or can you try to enable Unredirect Fullscreen Windows option with compiz settings manager (ccsm) in Composition?
Tried running from Unity 2D as well as Fluxbox, no change. Unredirect Fullscreen is already enabled.
Messed around with it some more on my desktop, and this does seem to be related to the other bug, or at least to VSync.
Enabled VSync, my problem goes away - except performance is horrendous with VSync enabled.
Disable VSync: game just feels choppy and weird, but with good FPS.
Also: Dump of my DESKTOP system info, just in case it comes in handy:
Processor Information:
Vendor: AuthenticAMD
Speed: 3500 Mhz
6 logical processors
6 physical processors
HyperThreading: Unsupported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Supported
SSE4a: Supported
SSE41: Supported
SSE42: Supported
Network Information:
Network Speed:
Operating System Version:
Ubuntu 12.04.2 LTS (32 bit)
Kernel Name: Linux
Kernel Version: 3.2.0-37-generic-pae
X Server vendor: The X.Org Foundation
X Server release: 11103000
Video Card:
Driver: ATI Technologies Inc. ATI Radeon HD 4770
Driver Version: 3.3.11672 Compatibility Profile Context
Desktop Color Depth: 24 bits per pixel
Monitor Refresh Rate: 60 Hz
VendorID: 0x1002
DeviceID: 0x94b3
Number of Monitors: 2
Number of Logical Video Cards: 1
Primary Display Resolution: 1920 x 1080
Desktop Resolution: 3200 x 1080
Primary Display Size: 18.78" x 10.55" (21.54" diag)
47.7cm x 26.8cm (54.7cm diag)
Primary VRAM Not Detected
Sound card:
Audio device: Realtek ALC889
Memory:
RAM: 8057 Mb
Miscellaneous:
UI Language: English
LANG: en_US.UTF-8
Microphone: Not set
Total Hard Disk Space Available: 258144 Mb
Largest Free Hard Disk Block: 86290 Mb
Installed software:
Recent Failure Reports:
Fri Feb 8 13:26:54 2013 GMT: file ''/tmp/dumps/assert_20130208082648_1.dmp'', upload yes: ''CrashID=bp-233dd93b-6f09-46aa-96b0-c30282130208''
Fri Feb 8 13:50:18 2013 GMT: file ''/tmp/dumps/assert_20130208085016_1.dmp'', upload yes: ''CrashID=bp-29fa24ea-a980-4a23-8519-4e10e2130208''
Fri Feb 8 13:59:37 2013 GMT: file ''/tmp/dumps/assert_20130208085933_1.dmp'', upload yes: ''CrashID=bp-2a3c732c-6078-4d4a-ab9f-717d32130208''
I found probably same issue with nVidia cards in very high settings - e.g. 8x antialiasing. Even I have 150FPS game is running not so smooth. In each slow mouse movement you can clearly see it stutters.
For me VSync fixed stuttering too, but game input delay is noticeable higher.
So this is not probably issue of graphics drivers, since it is same with nvidia and ati/amd.
Issue transferred to ValveSoftware/Source-1-Games#113.
This issue is closed - continue conversation there.
Nothing extracted yet.
During play, either local bot matches or online, the game, or at least the video, seems to stutter. It feels like the video (or something somewhere) hangs for a couple milliseconds and then goes back to normal.
Monitoring with netgraph shows stable FPS, and otherwise everything seems OK. I've tried several versions of FGLRX up to and including the 13.2 beta with no change.
When I get home from work, I'll see of I can duplicate the issue on my desktop (FX 6-core / Radeon 4770 ) and maybe narrow it down a bit.
Dump of Steam's system info tool,
TL;DR, I'm running Ubuntu 12.04 64 bit on an AMD A8-3500M/Radeon 6620G.:
Processor Information:
Vendor: AuthenticAMD
Speed: 1500 Mhz
4 logical processors
4 physical processors
HyperThreading: Unsupported
FCMOV: Supported
SSE2: Supported
SSE3: Supported
SSSE3: Supported
SSE4a: Supported
SSE41: Unsupported
SSE42: Unsupported
Network Information:
Network Speed:
Operating System Version:
Ubuntu 12.04.2 LTS (64 bit)
Kernel Name: Linux
Kernel Version: 3.5.0-23-generic
X Server vendor: The X.Org Foundation
X Server release: 11103000
Video Card:
Driver: ATI Technologies Inc. AMD Radeon HD 6620G
Sound card:
Audio device: ATI R6xx HDMI
Memory:
RAM: 3424 Mb
Miscellaneous:
UI Language: English
LANG: en_US.UTF-8
Microphone: Not set
Total Hard Disk Space Available: 229144 Mb
Largest Free Hard Disk Block: 170048 Mb
Installed software:
Recent Failure Reports: