System become super laggy after suspend/resume while running hwacc Opera
 

If I run the Opera browser with hardware acceleration support enabled, then suspend and resume my computer,
my system will become super laggy for a while.

If I then switch to a vconsole or another workspace and back, things back to normal.
Or if I disable 'Sync to VBlank' in nvidia-settings, the time it takes to recover is shortened.

There is nothing special in dmesg log or Xorg.log

System info:
OS: archlinux 64bit
Opera version: all versions that support hardware acceleration.
GPU: GT420M
Driver version: 290.10
Kernel version: 3.1.5

EDIT1: I just found a 'EQ overflowing' message in Xorg.log

[118142.110] [mi] EQ overflowing. The server is probably stuck in an infinite loop.
[118142.110]
Backtrace:
[118142.280] 0: /usr/bin/X (xorg_backtrace+0x26) [0x566a86]
[118142.280] 1: /usr/bin/X (mieqEnqueue+0x191) [0x547391]
[118142.280] 2: /usr/bin/X (0x400000+0x46f54) [0x446f54]
[118142.280] 3: /usr/bin/X (xf86PostMotionEventP+0x4a) [0x48187a]
[118142.280] 4: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fe8cfd52000+0x47ce) [0x7fe8cfd567ce]
[118142.280] 5: /usr/bin/X (0x400000+0x6ca07) [0x46ca07]
[118142.280] 6: /usr/bin/X (0x400000+0x925fe) [0x4925fe]
[118142.280] 7: /lib/libpthread.so.0 (0x7fe8d6590000+0xf850) [0x7fe8d659f850]
[118142.310] 8: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7fe8d08dc000+0x896bd) [0x7fe8d09656bd]
[118142.310] 9: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7fe8d08dc000+0x8b2b5) [0x7fe8d09672b5]
[118142.310] 10: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7fe8d08dc000+0xa67a9) [0x7fe8d09827a9]
[118142.310] 11: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7fe8d08dc000+0x4c4039) [0x7fe8d0da0039]
[118142.310] 12: /usr/bin/X (0x400000+0xf777f) [0x4f777f]
[118142.310] 13: /usr/bin/X (0x400000+0xf12f7) [0x4f12f7]
[118142.310] 14: /usr/bin/X (0x400000+0x33cb9) [0x433cb9]
[118142.310] 15: /usr/bin/X (0x400000+0x22eea) [0x422eea]
[118142.310] 16: /lib/libc.so.6 (__libc_start_main+0xed) [0x7fe8d58dc14d]
[118142.310] 17: /usr/bin/X (0x400000+0x231dd) [0x4231dd]

Re: System become super laggy after suspend/resume while running hwacc Opera
 

As a temporary workaround, you can try to insert something like:
chvt 0 ; sleep 1 ; chvt 7 to your (if any) hibernate/suspend script.

Re: System become super laggy after suspend/resume while running hwacc Opera
 

No effect.

Re: System become super laggy after suspend/resume while running hwacc Opera
 

sorry, first vt is 1
chvt 1 ; sleep 1 ; chvt 7