resume bug

DISCUSSION W.Pelser 2 participants 2 messages Apr 1, 2015

lore

Share & tools

lore

W.Pelser

author

2015-04-01 15:40 UTC #0 lore raw

Bug ID: 94861
Summary: After resume from hibernate/sleep USB-DVBT-adapter
does not work

Kernel 3.19.x and 4.0rcx

After boot:
strace -f -o /tmp/strace.out lsdvb .... :

    .
    .
    2114  open("/dev/dvb/adapter0/frontend0", O_RDWR|O_NONBLOCK) = 6
    .
    .

After resume:
strace -f -o /tmp/strace.out lsdvb .... :

     .
     .
    3848  open("/dev/dvb/adapter0/frontend0", O_RDWR|O_NONBLOCK) = -1 
ENODEV (No  such device)
     .
     .

Alan Stern

2015-04-01 17:38 UTC #1 lore raw

Quoted 15 lines · W.Pelser

Bug ID: 94861
Summary: After resume from hibernate/sleep USB-DVBT-adapter
does not work
Kernel 3.19.x and 4.0rcx
After boot:
   strace -f -o /tmp/strace.out lsdvb .... :
     .
     .
     2114  open("/dev/dvb/adapter0/frontend0", O_RDWR|O_NONBLOCK) = 6
     .
     .

Quoted 8 lines

After resume:

   strace -f -o /tmp/strace.out lsdvb .... :
      .
      .
     3848  open("/dev/dvb/adapter0/frontend0", O_RDWR|O_NONBLOCK) = -1 
ENODEV (No  such device)
      .
      .

If you are able to build and test your own kernels, you can try using git bisect to find out which change between the 3.18 and 3.19 kernels caused this problem.

This really ought to be discussed on the linux-media mailing list, because it is a regression in the dvb-usb driver.

Alan Stern