dota2 linux Fail to start game(missing executable)求助

[attajob]

在source 2 update之前，一直可以运行Steam Dota2
环境是：
ubuntu 14.04 32 bit

source 更新之后，就不能打开Dota2了，看官方的可能解决方案已经做过如下动作：
1. 建议游戏缓存完整性verify game cache integrity
2. 删除所有游戏文件夹，卸载steam， 重新安装steam，重新下载Dota2
但是就是不行
下面是steam的content log：

[2015-09-25 17:23:50] AppID 570 update changed : Running,
[2015-09-25 17:23:50] AppID 570 update changed : Running,Committing,
[2015-09-25 17:23:50] AppID 570 file commit : 62 updated, 0 moved, 0 deleted
[2015-09-25 17:23:51] AppID 570 state changed : Fully Installed,Update Running,
[2015-09-25 17:23:51] Finished update AppID 570, mounted depots (BuildID 789315): 373301 (6501421618434957845),373305 (4435851250675935801),373306 (3465939603875100691),373307 (1657068921381215751),381451 (9177508147850260255),381452 (4316184952028814951),381453 (870204822202457716),381454 (6904040863118164973),381455 (4715795036294350743),
[2015-09-25 17:23:51] AppID 570 update changed : Running,
[2015-09-25 17:23:51] AppID 570 update changed : None
[2015-09-25 17:23:51] AppID 570 state changed : Fully Installed,
[2015-09-25 17:23:51] AppID 570 scheduler finished : removed from schedule
[2015-09-25 17:23:51] Scheduler update appID 570: Priority Last, legacy=no, restore="", timeSinceLastPlayed=1810540
[2015-09-25 17:23:51] AppID 570 update changed : Running,
[2015-09-25 17:23:51] AppID 570 update changed : Running,Reconfiguring,
[2015-09-25 17:23:52] AppID 570 update changed : Running,
[2015-09-25 17:23:52] AppID 570 update started : download 0/0, store 0/0, reuse 0/0, stage 0/0
[2015-09-25 17:23:52] No changes detected, active: target:
[2015-09-25 17:23:52] AppID 570 update changed : Running,Committing,
[2015-09-25 17:23:52] AppID 570 file commit : 0 updated, 0 moved, 0 deleted
[2015-09-25 17:23:52] AppID 570 update changed : Running,
[2015-09-25 17:23:52] AppID 570 update changed : None
[2015-09-25 17:23:52] AppID 570 scheduler finished : removed from schedule
[2015-09-25 17:24:16] Current download rate: 0.000 Mbps
[2015-09-25 17:24:48] HTTP (CDN,1912451501) - telecom.dota2.wmsj.cn (telecom.dota2.wmsj.cn): Closing connection
[2015-09-25 17:24:49] HTTP (CDN,227755275) - unicom.dota2.wmsj.cn (unicom.dota2.wmsj.cn): Closing connection
[2015-09-25 17:24:49] HTTP (CDN,227755275) - unicom.dota2.wmsj.cn (unicom.dota2.wmsj.cn): Closing connection
[2015-09-25 17:24:49] HTTP (CDN,1912451501) - telecom.dota2.wmsj.cn (telecom.dota2.wmsj.cn): Closing connection
[2015-09-25 17:24:49] HTTP (CDN,227755275) - unicom.dota2.wmsj.cn (unicom.dota2.wmsj.cn): Closing connection
[2015-09-25 17:25:49] Failed running app 570 (missing executable "/home/joe/.steam/steam/steamapps/common/dota 2 beta/game/bin/win32/dota2.exe")
[2015-09-25 17:28:22] Failed running app 570 (missing executable "/home/joe/.steam/steam/steamapps/common/dota 2 beta/game/bin/win32/dota2.exe")
[2015-09-25 17:36:10] Failed running app 570 (missing executable "/home/joe/.steam/steam/steamapps/common/dota 2 beta/game/bin/win32/dota2.exe")
[2015-09-25 17:48:32] Failed running app 570 (missing executable "/home/joe/.steam/steam/steamapps/common/dota 2 beta/game/bin/win32/dota2.exe")
[2015-09-25 17:48:50] Failed running app 570 (missing executable "/home/joe/.steam/steam/steamapps/common/dota 2 beta/game/bin/win32/dota2.exe")
[2015-09-25 17:49:07] Failed running app 570 (missing executable "/home/joe/.steam/steam/steamapps/common/dota 2 beta/game/bin/win32/dota2.exe")

可以看到每次运行的时候，都去找win32的dota2.exe；但实际上应该运行的是、
/home/joe/.steam/steam/steamapps/common/dota 2 beta/game/bin/linuxsteamrt64/dota2

请给出建议，应该怎么解决这个问题

[astolia]

官方的回答是

Dota2 is now only supported on 64 bit Linux

https://github.com/ValveSoftware/Dota-2/issues/439

所以去换装64位版的系统

[ooinzaghi]

现在linux很少还用32位了吧,除非内存小的老机器

[Grook]

你启动steam后，自己人工启动DOTA2，应该就OK了

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