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I am new to Ubuntu, and I am having problems running Firefox 77 on Ubuntu 18.04. This is the error that shows up:

Exiting due to channel error.

###!!! [Parent][MessageChannel] Error: (msgtype=0x200055,name=PBrowser::Msg_UpdateEffects) Channel error: cannot send/recv


(firefox:724): LIBDBUSMENU-GLIB-WARNING **: 15:44:00.357: Unable to get session bus: Error spawning command line “dbus-launch --autolaunch=a1179a4949cc463f9b173074c5d11ce1 --binary-syntax --close-stderr”: Child process exited with code 1

###!!! [Parent][MessageChannel] Error: (msgtype=0x200098,name=PBrowser::Msg_SetDocShellIsActive) Channel error: cannot send/recv


###!!! [Parent][MessageChannel] Error: (msgtype=0x380077,name=PContent::Msg_LoadURI) Channel error: cannot send/recv


###!!! [Parent][MessageChannel] Error: (msgtype=0x380050,name=PContent::Msg_LoadProcessScript) Channel error: cannot send/recv


###!!! [Parent][MessageChannel] Error: (msgtype=0x380035,name=PContent::Msg_UpdateSharedData) Channel error: cannot send/recv

[Parent 724, Main Thread] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /build/firefox-_bVJH1/firefox-77.0~b9+build1/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 19

###!!! [Parent][MessageChannel] Error: (msgtype=0x380035,name=PContent::Msg_UpdateSharedData) Channel error: cannot send/recv

[Parent 724, Main Thread] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /build/firefox-_bVJH1/firefox-77.0~b9+build1/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 19

###!!! [Parent][MessageChannel] Error: (msgtype=0x380035,name=PContent::Msg_UpdateSharedData) Channel error: cannot send/recv

[Parent 724, Main Thread] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /build/firefox-_bVJH1/firefox-77.0~b9+build1/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 19

###!!! [Parent][MessageChannel] Error: (msgtype=0x380035,name=PContent::Msg_UpdateSharedData) Channel error: cannot send/recv

[Parent 724, Main Thread] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /build/firefox-_bVJH1/firefox-77.0~b9+build1/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 19

###!!! [Parent][MessageChannel] Error: (msgtype=0x380035,name=PContent::Msg_UpdateSharedData) Channel error: cannot send/recv

[Parent 724, Main Thread] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /build/firefox-_bVJH1/firefox-77.0~b9+build1/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 19
Exiting due to channel error.
Exiting due to channel error.
Exiting due to channel error.
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  • 1
    According to this resource FF v77 is not yet due for release... libre-software.net/how-to-install-firefox-on-ubuntu-linux-mint Have you installed the beta version?
    – graham
    May 25, 2020 at 8:20
  • Yes you were right, I downgraded to FF v59 and it is working now. Thank you! I followed the instructions from this website to downgrade FF if anyone is having the same problem: vitux.com/how-to-downgrade-packages-on-ubuntu
    – Cornelia
    May 25, 2020 at 13:40
  • I'll precis that as an answer to help anyone with a similar problem in the meantime. If you would care to accept that as the answer, it will help in that regard. Thanks.
    – graham
    May 25, 2020 at 13:56

1 Answer 1

0

According to this resource, FireFox version 77 is not yet due for release until early June 2020 and so the version installed in in beta.

The solution was to downgrade to a supported version (the OP downgraded to v59) using this resource and that solved the problem

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  • I'm seeing these issues for Firefox 87 on Ubuntu 18.04 in WSL, I'm not sure this is the right answer, though downgrading did obviously work for the OP.
    – icedwater
    Mar 31, 2021 at 2:09

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