Hi Marek! I have the same problem here. But I dont know how to solve mine after using Console.
Here is my error messages after "sleep".
30/04/2012 02:35:05.372 [0x0-0x23023].com.google.Chrome: DVFreeThread - CFMachPortCreateWithPort hack = 0x7c62bab0, fPowerNotifyPort= 0x7c62a9f0
30/04/2012 02:35:05.372 [0x0-0x23023].com.google.Chrome: DVFreeThread - CFMachPortCreateWithPort hack = 0x7b655c20, fPowerNotifyPort= 0x7b655d20
30/04/2012 02:35:05.372 [0x0-0x23023].com.google.Chrome: DVFreeThread - CFMachPortCreateWithPort hack = 0x7e22d960, fPowerNotifyPort= 0x7e22edf0
30/04/2012 02:35:05.372 [0x0-0x23023].com.google.Chrome: DVFreeThread - CFMachPortCreateWithPort hack = 0x7c6329d0, fPowerNotifyPort= 0x7c631b10
30/04/2012 02:35:05.372 [0x0-0x23023].com.google.Chrome: DVFreeThread - CFMachPortCreateWithPort hack = 0x7b6585f0, fPowerNotifyPort= 0x7b6446a0
30/04/2012 02:35:07.180 com.apple.usbmuxd: _SendAttachNotification (thread 0x7fff7b822960): sending attach for device 7c:11:be:32:2d:88@fe80::7e11:beff:fe32:2d88._apple-mobdev._tcp.local.: _GetAddrInfoReplyReceivedCallback matched.
30/04/2012 02:35:07.438 usbmuxd: _AMDeviceConnectByAddressAndPort (thread 0x100781000): IPv4
30/04/2012 02:35:45.442 com.apple.backupd: Error -35 while resolving alias to backup target
30/04/2012 02:35:55.454 com.apple.backupd: Backup failed with error: 19
30/04/2012 02:35:57.684 com.apple.usbmuxd: _handle_timer heartbeat detected detach for device 0xd-192.168.0.7:0!
30/04/2012 02:36:05.000 kernel: Sound assertion "failedToClearInterrupt" failed in AppleHDAController at line 3685 goto handler
30/04/2012 02:36:05.000 kernel: Sound assertion "pollRegister(kCORBCTL, 8, 0x02, 0)" failed in AppleHDAController at line 4349 goto handler
30/04/2012 02:36:05.000 kernel: Sound assertion "pollRegister(kRIRBCTL, 8, 0x02, 0)" failed in AppleHDAController at line 4505 goto handler
30/04/2012 02:36:05.000 kernel: Sound assertion "pollRegister(kRIRBCTL, 8, 0x02, 0)" failed in AppleHDAController at line 4374 goto Exit
30/04/2012 02:36:06.000 kernel: Sound assertion - Command/Response TIMED OUT and ( kRequestStateMatch == fCodecRequest->state = 2 ), fCodecRequest->command->codec: -549541135104, fCodecRequest->command->verb: 0x172000, fPoweredDown: 1, fAppleGraphicsControllerPoweredOn: 0
30/04/2012 02:36:06.000 kernel: Sound assertion "0 == fResetAsserted" failed in AppleHDAController at line 4810 goto handler
30/04/2012 02:36:06.000 kernel: Sound assertion ""Command/Response TIMED OUT and ( kRequestStateMatch == fCodecRequest->state )"" failed in AppleHDAController at line 4811 goto handler
30/04/2012 02:36:06.000 kernel: Sound assertion "0 != err" failed in IOHDACodecDevice at line 161 goto Exit
30/04/2012 02:36:06.000 kernel: Sound assertion "0 != result" failed in AppleHDAFunctionGroup at line 1098 goto Exit
30/04/2012 02:36:06.000 kernel: Sound assertion "0 != result" failed in AppleHDADriver at line 2977 goto Exit
30/04/2012 02:36:06.000 kernel: Sound assertion "0 != result" failed in AppleHDADriver at line 2927 goto Exit
Thank you very much!!
Miles