/srv/irclogs.ubuntu.com/2018/04/01/#xubuntu-devel.txt

Unit193That sounds important to pick up.00:39
flocculantali1234: :)05:12
flocculantali1234: also - 3 dbus timeouts on daily today 06:40
flocculantknome: not sure what the craic is, but bug 1754836 is refusing to show up on the tracker06:48
ubottubug 1754836 in bluez (Ubuntu) "Xubuntu: ERROR:dbus.proxies:Introspect error on org.bluez:/org/bluez: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.TimedOut: Failed to activate service 'org.bluez': timed out (service_start_timeout=25000ms)" [Critical,Confirmed] https://launchpad.net/bugs/175483606:48
EASTERBUNNY__IRC.SUPERNETS.ORG #SUPERBOWL BEST IRC NETWORK FUCK YOUR NETWORK08:14
EASTERBUNNY__NO SOFTCHATS HUGBOX TRANNIES BIBLETHUMPERS OR OPALS ALLOWED HERE08:14
EASTERBUNNY__YOU'VE SPENT YOUR ENTIRE LIFE HIDING IN SHITTY CHANNELS FOR WHAT08:14
EASTERBUNNY__YOUR IRC NETWORK IS TERRIBLE NO ONE CHATS THERE COME CHAT HERE 08:14
EASTERBUNNY__GET THE FUCK ON THIS IRC NETWORK RIGHT NOW YOU FUCKING PUSSY ASS08:14
EASTERBUNNY__THIS ISNT YOUR DADS FOOTBALL CHANNEL THIS IS REAL CHATS 24/7 36508:14
EASTERBUNNY__WE TAKE CHATS TO A NEW LEVEL, SOMETHING YOU'VE NEVER SEEN BEFORE08:14
EASTERBUNNY__DalekSec GridCube hggdh finsternis ali1234 Zren knome aaronraimist J21 bluesabre cruxeternus pleia2 ninetls benoliver999 acheronuk yofel cyphermox ubottu vinzv flexiondotorg akxwi-dave dkessel meetingology WillDuckworth nikow1 ubuntulo1 schuelle1 micahg Woowoo678 el wxl sakrecoer ochosi harrow nanotube mhall119 Logan SwissBot ubot9 paolo flocculant andrzejr sorinello alynpost donofrio hilpv torv 08:14
flocculantif only I wasn't an adult08:17
bluesabrePretty sure I have in fact seen that before09:51
flocculanthi bluesabre 10:01
bluesabrehi flocculant 10:05
flocculantseen what before btw? idiots or tracker :p10:15
bluesabreboth of course10:15
flocculant:D10:15
TJ-Is there a way, from console, to query/set xfce4-power-manager settings? Specifically, the current monitor backlight brightness ?13:51
ali1234yes there is13:52
ali1234i forgot what it is though13:52
TJ-Is it something via DBus ?13:52
ali1234it's a command line tool that operates with dbus13:53
TJ-i'm looking at the x.p.m. source but not found it yet.13:53
ali1234xfconf-query13:54
TJ-I've discovered the issue I've been debugging is due to the user-session, after a lid-close suspend has resumed, is setting the backlight to 0, so from a console I want to 'poke' it back to visible to get some more idea where the problem is13:54
ali1234that bug still exists huh?13:55
ali1234i thought that was fixed a couple of times...13:55
ali1234xfconf-query -c xfce4-power-manager -l13:56
ali1234also there is the raw kernel interface /sys/class/backlight/*/brightness13:58
TJ-it's not the kernel setting that's the problem, it's just the user session on resume13:59
TJ-E.g. when this happens the greeter/lock-screen is fine on vt8, consoles on ttys, but as soon as I authenticate and it switches back to vt7 it goes blank (which I now know is because it is setting the backlight brightness to 0 when switching to tty7)14:00
ali1234yes but if you just want to override it, the kernel is the fastest way14:00
ali1234whatever controls the backlight knows when you switch vt14:01
TJ-Doesn't look like x.p.m. has an actual 'brightness-now' setting, I wonder if the taskbar icon's display brightness has a node I can poke14:01
TJ-you're missing my point. I can be on a visible tty1-6 no problem, the moment I switch to tty7 (vt7) it resets the backlight brightness to 0, when I switch back to the tty1-6 it sets the original brightness14:02
ali1234yes, because it knows what vt you are on14:02
ali1234it just has the wrong idea about what the brightness should be14:03
TJ-it feels like - only for the lid-close event - it's not clearing the visible flag in some instances14:03
ali1234you can't control that externally14:03
TJ-I'll drop some debug on the state of the priv->visible flag to track if that's the problem14:04
TJ-Thanks for the pointer to xfconf-query, that's really useful14:04
TJ-I'm going to try changing the sysfs brightness from SSH whilst vt7 is active14:05
TJ-this is interesting; sysfs brightness can be set but actual_brightness doesn't change from 014:07
TJ-ahhh! it's affecting bl_power. =0 when on vt7 and =4 when on a console14:08
TJ-ha, got it back-to-front. bl_power=4 when its blank, bl_power=0 when a console is visible. Still don't seem to be able to override the vt8 setting though, it's changing it back from 0 to 4 immediately14:13
TJ-ahh, xfpm-brightness.c is writing to .xsession-errors "No outputs have backlight property" ... I'll drop a delay loop in there see if it is a timing issue14:32
pleia2support ticket open on our dev.x.o vps, it's having sadness this morning15:54
pleia2"We have detected an issue affecting the physical host your Linode resides on."15:54
TJ-Hmmm, not sure what's going on here. Noticed that sometimes, when on a console or SSH, if I do 'systemctl restart lightdm' it kills the console/ssh session and I have to log-in again.15:58
ali1234could be seat confusion16:04
ali1234lightdm had some race conditions a long long time ago, where it would re-use the seat before it was freed, leading to it getting freed after you logged in16:04
ali1234let me see if i can find the bug, it might be useful to look at the lightdm logs16:05
TJ-thanks... seems like I'm collecting more bugs than I'm fixing right now!16:07
TJ-I've done something that is causing light-locker to exit prematurely but not sure what; nothing in the log to say. 16:08
ali1234https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/125615016:08
ubottuLaunchpad bug 1256150 in lightdm (Ubuntu Trusty) "Xorg guest session fails to start if the user has logged out and logged in again" [High,Fix released]16:08
ali1234also this https://i.imgur.com/miVHGTP.gifv16:08
pleia2vps has recovered16:14
TJ-No, that bug doesn't match. Can't see one that matches right now but I'll leave that to one side whilst I chase this missing backlight issue16:15
ali1234it is possible that the two are related16:18
ali1234like, maybe it's confused about which vt woke up, so doesn't set the backlight properly and also logs you out of the one it thinks it should set the backlight on... something weird like that16:19
ali1234it's a long shot but worth keeping in mind16:19
ali1234there's also that bug where sometimes the installer doesn't correctly switch to the vt where the message "please remove the install media and reboot" is displayed16:20
ali1234it seems to switch to a different one instead16:20
TJ-the lid-close>suspend>resume>vt7-no-backlight  definitely feels like some kind of race condition. Proving very difficult to debug16:28
TJ-hmmm, so light-locker exiting was actually a core-dump because I tried to deference a null pointer with a gs_debug() statement. So now I have resumed and VT7 is showing the "This session is locked, You'll be redirected to the unlock automatically in a few seconds" but it isn't doing that, and the mouse pointer is not movable!16:48
TJ-restart lightdm, it works fine now, doesn't make vt7 invisible. 16:50
hilpvI keep experiencing this as well, when I switch away from my PC with my KVM16:59
hilpvscreensaver kicks in, and it seems unresponsive, switch to VT1, switch back to VT7 and it just says "This session is locked..."17:00
hilpvThen, darkness.17:00
TJ-My debug code is reporting, when switching /TO/ vt7: gs_manager_set_session_visible()=0 but I'm sure that should be 1, based on how the code handles the manager->priv->visible as a boolean17:01
TJ-which, if I'm interpreting that correctly, that it's doing the wrong thing17:01
TJ-ahh, false alarm, I'm printing the existing value not the value being passed into the function. Damn, that'd have been easy to fix.17:16
TJ-hilpv: Something for you to try. Before closing lid to suspend, switch to tty1 so vt7 is not visible. Close lid > suspends ... Open lid > resumes ... see if it behaves differently17:20
TJ-hilpv: need to do that from a restart of lightdm; once the session has problems it won't cure it17:26

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