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diff --git a/open_issues/console_tty1.mdwn b/open_issues/console_tty1.mdwn new file mode 100644 index 00000000..614c02c9 --- /dev/null +++ b/open_issues/console_tty1.mdwn @@ -0,0 +1,151 @@ +[[!meta copyright="Copyright © 2012 Free Software Foundation, Inc."]] + +[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable +id="license" text="Permission is granted to copy, distribute and/or modify this +document under the terms of the GNU Free Documentation License, Version 1.2 or +any later version published by the Free Software Foundation; with no Invariant +Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license +is included in the section entitled [[GNU Free Documentation +License|/fdl]]."]]"""]] + +[[!tag open_issue_hurd]] + +Seen in context of [[libpthread]], but probably not directly related to it. + + +# IRC, freenode, #hurd, 2012-08-30 + + <gnu_srs> Do you also experience a frozen hurd console? + <braunr> yes + <braunr> i didn't check but i'm almost certain it's a bug in my branch + <braunr> the replacement of condition_implies was a bit hasty in some + places + <braunr> this is why i want to rework it separately + + +## IRC, freenode, #hurd, 2012-09-03 + + <gnu_srs> braunr: Did you find the cause of the Hurd console freeze for + your libpthread branch? + <braunr> gnu_srs: like i said, a bug + <braunr> probably in the replacement of condition_implies + <braunr> i rewrote that part in libpipe and it no works + <braunr> now* + + <braunr> gnu_srs: the packages have been updated + <braunr> and these apparently fix the hurd console issue correctly + +## IRC, freenode, #hurd, 2012-09-04 + + <braunr> gnu_srs: this hurd console problem isn't fixed + <braunr> it seems to be due to a race condition that only affects the first + console + <braunr> and by reading the code i can't see how it can even work oO + <gnu_srs> braunr: just rebooted, tty1 is still locked, tty2-6 works. And + the floppy error stays (maybe a kvm bug??) + <braunr> the floppy error is probably a kvm bug as we discussed + <braunr> the tty1 locked isn't + <braunr> i have it too + <braunr> it seems to be a bug in the hurd console server + <braunr> which is started by tty1, but for some reason, doesn't return a + valid answer at init time + <braunr> if you kill the term handling tty1, you'll see your first tty + starts working + <braunr> for now i'll try a hack that starts the hurd console server before + the clients + <braunr> doesn't work eh + <braunr> tty1 is the only one started before runttys + <braunr> indeed, fixing /etc/hurd/runsystem.gnu so that it doesn't touch + tty1 fixes the problem + <gnu_srs> do you have an explanation? + <braunr> not really no + <braunr> but it will do for now + <pinotree> samuel added that with the comment above, apparently to + workaround some other issue of the hurd console + <braunr> i'm pretty sure the bug is already visible with cthreads + <braunr> the first console always seems weird compared to the others + <braunr> with a login: at the bottom of the screen + <braunr> didn't you notice ? + <pinotree> sometimes, but not often + <braunr> typical of a race + <pinotree> (at least for me) + <braunr> pthreads being slightly slower exposes it + <gnu_srs> confirmed, it works by commenting out touch /dev/tty1 + <gnu_srs> yes, the login is at the bottom of the screen, sometimes one in + the upper part too:-/ + <braunr> so we have a new open issue + <braunr> hm + <braunr> exiting the first tty doesn't work + <braunr> which makes me think of the issue we have with screen + <gnu_srs> confirmed! + <braunr> also, i don't understand why we have getty on tty1, but nothing on + the other terminals + <braunr> something is really wrong with terminals on hurd *sigh* + <braunr> ah, the problem looks like it happens when getty attempts to + handle a terminal ! + <braunr> gnu_srs: anyway, i don't think it should be blocking for the + conversion to pthreads + <braunr> but it would be better if someone could assign himself that bug + <braunr> :) + + +## IRC, freenode, #hurd, 2012-09-05 + + <antrik> braunr: the login at the bottom of the screen if from the Mach + console I believe + <braunr> antrik: well maybe, but it shouldn't be there anyway + <antrik> braunr: why not? + <antrik> it's confusing, but perfectly correct as far as I can tell + <braunr> antrik: two login: on the same screen ? + <braunr> antrik: it's even more confusing when comparing with other ttys + <antrik> I mean it's correct from a techincal point of view... I'm not + saying it's helpful for the user ;-) + <braunr> i'm not even sure it's correct + <braunr> i've double checked the pthreads patch and didn't see anything + wrong there + <antrik> perhaps the startup of the Hurd console could be delayed a bit to + make sure it happens after the Mach console login is done printing + stuff... + <braunr> why are our gettys stubs ? + <antrik> I never understood the point of a getty TBH... + <braunr> well you need to communicate to something behind your terminal, + don't you ? + <braunr> with* + <antrik> why not just launch the login program or login shell right away? + <braunr> what if you want something else than a login program ? + <antrik> like what? + <antrik> and how would a getty help with that? + <braunr> an ascii-art version of star wars + <braunr> it would be configured to start something else + <antrik> and why does that need a getty? why not just start something else + directly? + <braunr> well getty is about the serial line parameters actually + <antrik> yeah, I had a vague understanding that it has something to do with + serial lines (or real TTY lines)... but we hardly need that on local + cosoles :-) + <antrik> consoles + <braunr> right + <braunr> but then why even bother with something like runttys + <antrik> well, something has to start the terminal servers?... + <antrik> I might be confused though + <braunr> what i don't understand is + <braunr> why is there no getty at startup, whereas they are spawned when + logging off ? + <antrik> they are? that's fascinating indeed ;-) + <braunr> does it behave like this on your old version ? + <antrik> I don't remember ever having seen a "getty" process on my Hurd + systems... + <braunr> can you log on e.g. tty2 and then log out, and see ? + <antrik> OTOH, I'm hardly ever using consoles... + <antrik> hm... I think that should be possible remotely using the console + client with ncurses driver? never tried that... + <braunr> ncurses driver ? + <braunr> hum i don't know, never tried either + <braunr> and it may add other bugs :p + <braunr> better wait to be close to the machine + <antrik> hehe + <antrik> well, it's a good excuse for trying the ncurses driver ;-) + <antrik> hrm + <antrik> alien:~# console -d ncursesw + <antrik> console: loading driver `ncursesw' failed: Gratuitous error + <antrik> I guess nobody tested that stuff in years |