Red Hat Bugzilla – Bug 497418
Traceback debug mode doesn't honor console=ttyS0
Last modified: 2013-09-02 02:35:18 EDT
Description of problem:
When encountering a traceback for an install initiated over a serial console, selecting "Debug" shows the python shell on console=ttyS0, but stdin does not register.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Boot installer with vnc *and* console=ttyS0
2. Trigger a traceback with updates=http://jlaska.fedorapeople.org/traceback.img
3. When traceback hits, select "Debug"
4. On ttyS0, attempt to navigate through the pdb shell
Keypresses are not honored, it seems like stdin is confused on ttyS0?
Does your issue get solved by describing the whole console argument as in "console=ttyS0,9600n8". It fixed my test. Can you pls confirm.
apparently the previous workaround isnot as consistent as I would want it to be :( now, I can't make it work, not even with 9600n8 defined.
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.
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Need to re-test this to see if it still exists in branched.
Still a problem in F-13 (no changes since F-11 test result)
I don't suppose you remember when this last worked?
(In reply to comment #7)
> I don't suppose you remember when this last worked?
I know it's not worked for a *long* time. A quick test shows that it doesn't work in F14, F13, F12, F11 and almost works in F10.
For F10, I'm able to type at the serial console prompt but it immediately tracebacks.
Traceback (most recent call last):
File "/usr/bin/anaconda", line 959, in <module>
File "/usr/lib/anaconda/exception.py", line 608, in handleException
termios.tcsetattr(si, termios.TCSADRAIN, attr)
termios.error: (5, 'Input/output error')
install exited abnormally [1/1]
I'll test a few more older releases, but I don't expect success. I'll update the bz if any of the previous releases work.
Maybe things'll get better once I switch us to systemd, but I'm not overly hopeful.