Re: No input (was: Black screen / X issue fixed)
2017-08-19 5:06 GMT+02:00 Cyril Brulebois: > Cyril Brulebois (2017-08-13): >> This is fun: the bug is “fixed” in that the language selection screen >> pops up properly, but it's not actually possible to get any input (incl. >> VT switching) into the installer. I'll look into this once I'm back from >> DebConf. > > And here's the culprit/bug report: > https://bugs.debian.org/872598 Thank you for discovering this! Let's hope this can be addressed soon :-) I'll look into udev later (when I am not falling asleep any minute) Cheers, Matthias -- I welcome VSRE emails. See http://vsre.info/
No input (was: Black screen / X issue fixed)
Cyril Brulebois(2017-08-13): > This is fun: the bug is “fixed” in that the language selection screen > pops up properly, but it's not actually possible to get any input (incl. > VT switching) into the installer. I'll look into this once I'm back from > DebConf. And here's the culprit/bug report: https://bugs.debian.org/872598 KiBi. signature.asc Description: Digital signature
Re: Black screen / X issue fixed
Philip Hands(2017-08-15): > Oh, and the "obviously" wasn't meant to be something like a complaint, > just saying that it was the thing that was causing some of the installs > to grind to a halt -- so nothing to say sorry for. > > Sorry if what I said sounded like I was grumpy about it -- that was not > even slightly the case. :-) Oh, no worries, was just mentioning why I didn't connect the dots properly when the topic was brought up. Thanks for the instructions in the other mail, will look when I have a chance, probably in a few days. KiBi. signature.asc Description: Digital signature
Re: Black screen / X issue fixed
Cyril Bruleboiswrites: > Hi, > > Philip Hands (2017-08-14): >> Yes that's the behaviour I was commenting on in IRC, and which was >> obviously being spotted by the jenkins/cucumber setup. > > Sorry, based on earlier comments over the previous days/weeks, I went > for a “X is broken” shortcut and might not have actually got your exact > point. Oh, and the "obviously" wasn't meant to be something like a complaint, just saying that it was the thing that was causing some of the installs to grind to a halt -- so nothing to say sorry for. Sorry if what I said sounded like I was grumpy about it -- that was not even slightly the case. :-) Cheers, Phil. -- |)| Philip Hands [+44 (0)20 8530 9560] HANDS.COM Ltd. |-| http://www.hands.com/http://ftp.uk.debian.org/ |(| Hugo-Klemm-Strasse 34, 21075 Hamburg,GERMANY signature.asc Description: PGP signature
Re: Black screen / X issue fixed
Cyril Bruleboiswrites: > Hi, > > Philip Hands (2017-08-14): >> Yes that's the behaviour I was commenting on in IRC, and which was >> obviously being spotted by the jenkins/cucumber setup. > > Sorry, based on earlier comments over the previous days/weeks, I went > for a “X is broken” shortcut and might not have actually got your exact > point. > >> BTW It is possible to run get something like shell access to the >> running d-i via its ttyS0 (by putting rather a lot of stuff on the >> kernel boot command line), so if that would help I can run tests for >> you and/or explain the proceedure. > > If you would have a little time to explain this, that would be immensely > useful. Feel free to just sum it up quickly in an email, I might write > some docs about it afterwards. Well, it's a bit horrible, but as long as you don't need to type the kernel command line by hand it's OK. The code that does the trick is here: https://anonscm.debian.org/cgit/qa/jenkins.debian.net.git/tree/cucumber/features/step_definitions/common_steps.rb#n217 which you can see the result of at about 27 seconds into this: https://jenkins.debian.net/view/lvc/job/lvc_debian-testing-daily/1341/artifact/results/00%3A01%3A57_Install_Debian,_and_boot_to_a_login_prompt,_Examples___1_.mpg What that does is start a while loop that reads from /dev/ttyS0, and runs the commands that you type, returning the STDOUT, STDERR, and result code, separated by various control characters which you probably don't care about. If you do that, then you can use nc (or whatever) to connect to the TCP port which is defined for the KVM's ttyS0, and type commands, and get their output, followed by a result code. It's almost like having a shell prompt, other than the slightly odd ordering of STDERR and the result. It would probably be better to have a udeb that contains a thing for running the listener, like the debugging thing that is available in tails -- theirs returns results in json, and lets one run as users other than root, and can drop thing into the background, but we don't really need all that in d-i. Cheers, Phil. -- |)| Philip Hands [+44 (0)20 8530 9560] HANDS.COM Ltd. |-| http://www.hands.com/http://ftp.uk.debian.org/ |(| Hugo-Klemm-Strasse 34, 21075 Hamburg,GERMANY signature.asc Description: PGP signature
Re: Black screen / X issue fixed
Hi, Philip Hands(2017-08-14): > Yes that's the behaviour I was commenting on in IRC, and which was > obviously being spotted by the jenkins/cucumber setup. Sorry, based on earlier comments over the previous days/weeks, I went for a “X is broken” shortcut and might not have actually got your exact point. > BTW It is possible to run get something like shell access to the > running d-i via its ttyS0 (by putting rather a lot of stuff on the > kernel boot command line), so if that would help I can run tests for > you and/or explain the proceedure. If you would have a little time to explain this, that would be immensely useful. Feel free to just sum it up quickly in an email, I might write some docs about it afterwards. Thanks! KiBi. signature.asc Description: Digital signature
Re: Black screen / X issue fixed
Cyril Bruleboiswrites: > Cyril Brulebois (2017-08-08): >> So I've been meaning to debug the black screen in graphical installer >> for quite a while, but I've been busy with preparing for my talk, then >> discussing busybox with new recruits. >> >> I've finally managed to bisect that down to the following dinstalls: >> 2017-06-20 22:37:45 (last OK) >> 2017-06-21 03:38:47 (first KO) >> >> and out of the 6 packages, I've isolated the culprit: >> libexpat1-udeb_2.2.1-1_amd64.udeb >> >> Right afterwards I've discovered that an installer built against >> unstable… just works again. I'm suspecting the new expat upstream >> version might have been the fix we needed: >> https://tracker.debian.org/news/860347 >> >> But I doubt it makes much sense to also isolate what/when the exact >> fix happened. I thought I would just share the “when did it break?” >> part. > > This is fun: the bug is “fixed” in that the language selection screen > pops up properly, but it's not actually possible to get any input (incl. > VT switching) into the installer. I'll look into this once I'm back from > DebConf. Yes that's the behaviour I was commenting on in IRC, and which was obviously being spotted by the jenkins/cucumber setup. BTW It is possible to run get something like shell access to the running d-i via its ttyS0 (by putting rather a lot of stuff on the kernel boot command line), so if that would help I can run tests for you and/or explain the proceedure. Cheers, Phil. -- |)| Philip Hands [+44 (0)20 8530 9560] HANDS.COM Ltd. |-| http://www.hands.com/http://ftp.uk.debian.org/ |(| Hugo-Klemm-Strasse 34, 21075 Hamburg,GERMANY signature.asc Description: PGP signature
Re: Black screen / X issue fixed
Cyril Brulebois(2017-08-08): > So I've been meaning to debug the black screen in graphical installer > for quite a while, but I've been busy with preparing for my talk, then > discussing busybox with new recruits. > > I've finally managed to bisect that down to the following dinstalls: > 2017-06-20 22:37:45 (last OK) > 2017-06-21 03:38:47 (first KO) > > and out of the 6 packages, I've isolated the culprit: > libexpat1-udeb_2.2.1-1_amd64.udeb > > Right afterwards I've discovered that an installer built against > unstable… just works again. I'm suspecting the new expat upstream > version might have been the fix we needed: > https://tracker.debian.org/news/860347 > > But I doubt it makes much sense to also isolate what/when the exact > fix happened. I thought I would just share the “when did it break?” > part. This is fun: the bug is “fixed” in that the language selection screen pops up properly, but it's not actually possible to get any input (incl. VT switching) into the installer. I'll look into this once I'm back from DebConf. KiBi. signature.asc Description: Digital signature
Black screen / X issue fixed
Hi, So I've been meaning to debug the black screen in graphical installer for quite a while, but I've been busy with preparing for my talk, then discussing busybox with new recruits. I've finally managed to bisect that down to the following dinstalls: 2017-06-20 22:37:45 (last OK) 2017-06-21 03:38:47 (first KO) and out of the 6 packages, I've isolated the culprit: libexpat1-udeb_2.2.1-1_amd64.udeb Right afterwards I've discovered that an installer built against unstable… just works again. I'm suspecting the new expat upstream version might have been the fix we needed: https://tracker.debian.org/news/860347 But I doubt it makes much sense to also isolate what/when the exact fix happened. I thought I would just share the “when did it break?” part. KiBi. signature.asc Description: Digital signature