#9635 LOW 1.5-F11: chvt hangs after telinit 1 followed by telinit 5

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#9635: chvt hangs after telinit 1 followed by telinit 5
----------------------------+-----------------------------------------------
 Reporter:  Quozl           |                 Owner:  dsaxena                          
     Type:  defect          |                Status:  new                              
 Priority:  low             |             Milestone:  1.5-F11                          
Component:  kernel          |               Version:  Development build as of this date
 Keywords:  os34 os36 chvt  |           Next_action:  diagnose                         
 Verified:  0               |   Deployment_affected:                                   
Blockedby:                  |              Blocking:                                   
----------------------------+-----------------------------------------------
 After switching to runlevel 5 from runlevel 1, chvt and Ctrl-Alt-F1 no
 longer work.

 Steps to reproduce:
  * XO-1.5,
  * os34 or os36,
  * start Terminal, be root, type ''telinit 1'' and press enter,
  * wait for test console root prompt,
  * type ''telinit 5'' and press enter,
  * wait for Sugar,
  * start Terminal, be root, type ''chvt 1'' and press enter.

 Expected result:
  * X root window replaced on screen by image of text console.

 Observed result:
  * refresh of X root window and Terminal contents,
  * prompt does not return until Ctrl-C is pressed.

 Output from ''strace chvt 1'' followed by Ctrl-C:
 {{{
 open("/dev/tty0", O_RDWR)               = 3
 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo
 ...}) = 0
 ioctl(3, KDGKBTYPE, 0xafc3e69f)         = 0
 ioctl(3, VIDIOC_G_COMP or VT_ACTIVATE, 0x1) = 0
 ioctl(3, VIDIOC_S_COMP or VT_WAITACTIVE, 0x1) = ? ERESTARTNOHAND (To be
 restarted)
 --- SIGINT (Interrupt) @ 0 (0) ---
 +++ killed by SIGINT +++
 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/9635>
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