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Bug#719: Clone screens for touch-enabled devices
by Stefan Baur 08 Jan '15

08 Jan '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 package: x2gothinclient version: 1.1.0.2 priority: wishlist Control: tag -1 patch Hi, when using a touch-enabled device (like a tablet computer) as a thinclient, the cursor isn't properly aligned when you try to run a second display (non-touch-enabled) alongside with it. What happens is that both displays get attached to form one large virtual screen, however, your touch-enabled surface obviously still only covers the primary display. The X server doesn't understand this, and tries to map your movements on the primary display to the entire virtual screen surface, so the further to the side and to the bottom you get, the more off your mouse pointer will be from the actual position where you touch your primary display. PRI SEC VIRT +-----+ +-----+ +----------+ |X | | | |O | | | | | | | | | | | | | | | | | | | +-----+ +-----+ +----------+ +-----+ +-----+ +----------+ | | | | | | | | | | | | | \ | | / | | O | | | | | | | +-----+ +-----+ +----------+ \ = where you touch / = where X draws the cursor in reality X = overlapping \ and / O = where X believes the cursor is, on the virtual screen There's no sensible way to use a touch-enabled device with a second screen and no additional, external pointing device, so I've added this patch/workaround that switches to clone mode instead. Of course, if you give up on using the touchscreen and plug in a USB mouse or other external pointing device, you could use two screens. This patch doesn't cover that situation. Maybe someone else has an idea on what a sensible solution could look like that covers this as well? Like, scan for USB HID pointing devices ("find /dev/input -name "mouse*" | wc -l") and, if present in addition to a touchscreen, don't clone, but do side-by-side s if no touch device was detected at all? Tht might have some additional caveats, though, like the detection mis-firing if the touch component of a tablet device "cloaks" as mouse or offers some sort of mouse emulation support. Also, in that case, it would probably be smart to disable the touch interface completely so as to not confuse users why their touches don't align with the cursor. Does anybody know of a generic way to do this? Again, input/suggestions welcome. - -Stefan - -- BAUR-ITCS UG (haftungsbeschränkt) Geschäftsführer: Stefan Baur Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQEcBAEBAgAGBQJUq+xgAAoJEG7d9BjNvlEZrjkIAKDP60/c6aMxGsYiA3uZZ0Iw q2W6g3rsjE5t3r1wLjhCgq6VzH9hOvThT2g+ox6upAXoAtj3c9ePhIViboVmX5dH 8RBPucV14gjP7rXxeMlmQgBKo/y5wvtABxcDHO1jlzQoTL752bfANae7zzTrDQJS vdF+fIScHg/W2Ft/KkyYjlOqawCJ9euZOzvOMUmTLFkSrIu6CKAtVF3YZOptnN25 +VcCoiltYUxmGzhYNmGMa9g+zMCZcaPSKloE/pK4YaxQjbCV5NJKuiiILC/E24qa R3dssyt5m33muyQi+E8Ygger2faTe9efUrsDGMHnacCs94wqySUtTebQQzT12KE= =hoaC -----END PGP SIGNATURE-----

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Bug#719: X2Go issue (in src:x2gothinclient) has been marked as pending for release
by Mike Gabriel 08 Jan '15

08 Jan '15

tag #719 pending fixed #719 1.5.0.0 thanks Hello, X2Go issue #719 (src:x2gothinclient) reported by you has been fixed in X2Go Git. You can see the changelog below, and you can check the diff of the fix at: http://code.x2go.org/gitweb?p=x2gothinclient.git;a=commitdiff;h=373c11f The issue will most likely be fixed in src:x2gothinclient (1.5.0.0). light+love X2Go Git Admin (on behalf of the sender of this mail) --- commit 373c11fc7ea4550996f94ee3a69db8ac8a451c1c Author: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Date: Thu Jan 8 16:23:38 2015 +0100 TCE in displaymanager mode: Don't align multiple heads next to one another if a (Wacom) touchscreen is deteced in the list of heads. (Fixes: #719). diff --git a/debian/changelog b/debian/changelog index baf2ce8..0ecfe84 100644 --- a/debian/changelog +++ b/debian/changelog @@ -63,6 +63,9 @@ x2gothinclient (1.5.0.0-0x2go1) UNRELEASED; urgency=low - For X2Go TCE in display manager mode, set login backgrounds of all screens (if more than one is used) to a blue'ish background color. (Fixes: #718). + - TCE in displaymanager mode: Don't align multiple heads next to + one another if a (Wacom) touchscreen is deteced in the list of heads. + (Fixes: #719). * debian/control: + Rename bin:package: x2gothinclient -> x2gothinclient-daemon. + Make sure x2gothinclient-minidesktop pulls in X11 and X2Go Client.

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Processed: your mail
by owner＠bugs.x2go.org 08 Jan '15

08 Jan '15

Processing commands for control(a)bugs.x2go.org: > priority 701 wishlist Bug #701 [x2goclient] We need to talk about, and document, which options are overridable in which way Severity set to 'wishlist' from 'normal' > thanks Stopping processing here. Please contact me if you need assistance. -- 701: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=701 X2Go Bug Tracking System Contact owner(a)bugs.x2go.org with problems

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Processed: your mail
by owner＠bugs.x2go.org 08 Jan '15

08 Jan '15

Processing commands for control(a)bugs.x2go.org: > close 724 Bug #724 [x2goserver-xsession] Scanning does not work over romote-desktop session with sane Marked Bug as done > thanks Stopping processing here. Please contact me if you need assistance. -- 724: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=724 X2Go Bug Tracking System Contact owner(a)bugs.x2go.org with problems

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Bug#405: X2Go issue (in src:x2goserver) has been marked as pending for release
by Mike Gabriel 08 Jan '15

08 Jan '15

tag #405 pending fixed #405 4.0.1.19 thanks Hello, X2Go issue #405 (src:x2goserver) reported by you has been fixed in X2Go Git. You can see the changelog below, and you can check the diff of the fix at: http://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=d6b726d The issue will most likely be fixed in src:x2goserver (4.0.1.19). light+love X2Go Git Admin (on behalf of the sender of this mail) --- commit d6b726dc6b9ad2945d3a3218ce2eeaef6474257a Author: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Date: Thu Jan 8 13:26:21 2015 +0100 Start sshfs with a timeout of 30 seconds (because it never finishes if something is wrong with the client-side TCP socket). Also remove/unmount mountpoints erroneously registered sshfs mountpoints if sshfs command times out. (Fixes: #405). diff --git a/debian/changelog b/debian/changelog index 4d34828..bf219da 100644 --- a/debian/changelog +++ b/debian/changelog @@ -55,6 +55,11 @@ x2goserver (4.0.1.19-0x2go1) UNRELEASED; urgency=medium - Improve sanitizer, use 'x2gosid' sanitizer for session IDs everywhere. Drop unused 'pnixusername' sanitizer in 4.0.1.x release of X2Go Server. - Allow usernames in session IDs of length 48 chars. + - Start sshfs with a timeout of 30 seconds (because it never finishes if + something is wrong with the client-side TCP socket). Also remove/unmount + mountpoints erroneously registered sshfs mountpoints if sshfs command + times out. Furthermore, print errors to STDERR (not STDOUT). (Fixes: + #405). * debian/control: + Add D (x2goserver): libfile-which-perl. + Add C (x2goserver: x2godesktopsharing (<< 3.1.1.2).

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Processed: your mail
by owner＠bugs.x2go.org 08 Jan '15

08 Jan '15

Processing commands for control(a)bugs.x2go.org: > tag 724 not-a-bug Bug #724 [x2goserver-xsession] Scanning does not work over romote-desktop session with sane Added tag(s) not-a-bug. > -- Stopping processing here. Please contact me if you need assistance. -- 724: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=724 X2Go Bug Tracking System Contact owner(a)bugs.x2go.org with problems

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Processed: X2GO Client pollutes .ssh/authorized_keys
by owner＠bugs.x2go.org 08 Jan '15

08 Jan '15

Processing control commands: > tag -1 confirmed Bug #405 [x2goserver] x2gomountdirs/sshfs hangs indefinitely if Ignoring request to alter tags of bug #405 to the same tags previously set > reassign -1 x2goserver Bug #405 [x2goserver] x2gomountdirs/sshfs hangs indefinitely if Ignoring request to reassign bug #405 to the same package > retitle -1 x2gomountdirs/sshfs hangs indefinitely if Bug #405 [x2goserver] x2gomountdirs/sshfs hangs indefinitely if Ignoring request to change the title of bug#405 to the same title -- 405: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=405 X2Go Bug Tracking System Contact owner(a)bugs.x2go.org with problems

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Processed: X2GO Client pollutes .ssh/authorized_keys
by owner＠bugs.x2go.org 08 Jan '15

08 Jan '15

Processing control commands: > tag -1 confirmed Bug #405 [x2goclient] x2goclient pollutes ~/.ssh/authorized_keys Added tag(s) confirmed. > reassign -1 x2goserver Bug #405 [x2goclient] x2goclient pollutes ~/.ssh/authorized_keys Bug reassigned from package 'x2goclient' to 'x2goserver'. No longer marked as found in versions 4.0.1.2. Ignoring request to alter fixed versions of bug #405 to the same values previously set > retitle -1 x2gomountdirs/sshfs hangs indefinitely if Bug #405 [x2goserver] x2goclient pollutes ~/.ssh/authorized_keys Changed Bug title to 'x2gomountdirs/sshfs hangs indefinitely if' from 'x2goclient pollutes ~/.ssh/authorized_keys' -- 405: http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=405 X2Go Bug Tracking System Contact owner(a)bugs.x2go.org with problems

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Bug#724: Scanning does not work over romote-desktop session with sane
by Stefan Baur 08 Jan '15

08 Jan '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Control: tag -1 wontfix Control: tag -1 notabug Control: tag -1 close Hello, Andreas. I couldn't help but notice that you already reported this on X2Go-User back in November of 2014. (http://lists.x2go.org/pipermail/x2go-user/2014-November/002679.html) So, let me quote from my reply to you that I sent back then (http://lists.x2go.org/pipermail/x2go-user/2014-November/002680.html) > I fail to see what this has to do with X2Go, other than you used > X2go as a workaround for your problem. We're not Debian, we're not > XOrg, so the bug report mentioned has nothing to do with us. If you feel differently, please be more precise in your explanation as to why you believe it to be an X2Go bug. - -Stefan - -- BAUR-ITCS UG (haftungsbeschränkt) Geschäftsführer: Stefan Baur Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQEcBAEBAgAGBQJUro33AAoJEG7d9BjNvlEZ0X4H/2NsT1wwZCE1rkfhFt4RfoQL Kl3w0hgUVLf7Jfg/GfOY+OTEEQoe33iEisktHnwT/BVOWt8Es+w0hqi7nqqu5JET XmX7hewcQ38VPXHArSj/UQiXbDyY8m2US9DLVI2aOJ2H+/4MLnMrJcZY53abOPVk TG4yY0yOSPBHgATIzycGwn8CPi9fVGw8HQdDchUUB0FPAaKrBYYq78DPA6OrTZ+0 poDV86+cBqnc7JS1aharjNk8Og/n6YDH3JbsGjStzT8X98+0De3CJWhlAlLI4i2e bnWRbFZOp0iii5r3SyQF1yNLC9xfxEGGE8ZFCc1rlWExM29WaqD56REtWvef6NU= =5+3O -----END PGP SIGNATURE-----

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Bug#405: X2GO Client pollutes .ssh/authorized_keys
by Mike Gabriel 08 Jan '15

08 Jan '15

Control: tag -1 confirmed Control: reassign -1 x2goserver Control: retitle -1 x2gomountdirs/sshfs hangs indefinitely if client-side sshd is down Hi, I have spent the last 1.5 days with hunting down the cause for #405. The phenomenon is: o client-side is Linux (or maybe Mac OS X) o sshd ist not running on the client machine o the session profile has printing or client-side folder sharing enabled If X2Go Client launches a remote session it does the following things: o set up a reverse port forwarding tunnel that allows <server-side-localhost>:<fsPort> -> <client-side-localhost>:<sshd-Port> o if sshd is not running, the above will still work... o then x2gomountdirs is evoked... o ... which attempts to run sshfs against <server-side-localhost>:<fsPort> o however, in X2Go Client this triggers an I/O error because the client-side sshd is not listening / not running I studied the X2Go Client code (sshmasterconnection.cpp and sshprocess.cpp) very deeply and added several new debug messages + improved the debugging output of existing messages. In X2Go Client, the mounting of a client-side folder uses two SSH channel inside this reverse port forwarding tunnel: o one SSH channel for the tunnel itself o one SSH channel per x2gomountdirs command call evoked on the server Furthermore, X2Go Client can detect if failures occur in x2gomountdirs this way: o something strange happens while executing the command (SSH disconnects etc.) o the stdOut of the evoked command (x2gomountdirs) is empty while stdErr is not So, (and I did not know this), all X2Go Server side commands (/usr/bin/x2go*) should properly write to stderr if things go wrong and leave stdOut untouched at the same time. The problem now is: if x2gomountdirs is not detected as "failing" (which it is not), the sshfs pubkey required for client-side folder sharing is not removed from the .ssh/authorized_keys file. Furthermore, X2Go Client detects the I/O errors on the sshfs tunnel channel, but cannot relate to that to the x2gomountdirs command evoked via the SSH command channel. My first attempts targetted getting X2Go Client to tidy up the authorized_keys file whenever a tunnel failure occurs. X2Go Client should be able to detect this, but this would require a partial redesign of the complete reverse port forwarding mechanism. I disrecommend doing this for the current X2Go Client implementation, but we should keep it in the back of our heads for a later redesign. It took about 8h to come to this conclusion. My second approach (and I will commit soon is this): o evoke sshfs command with "timeout 30 sshfs <options>" o print error messages to STDERR (not to STDOUT) o and make sure we unregister the mount point if sshfs fails (with fusermount -u) Wit this approach, X2Go Client tries to call x2gomountdirs, x2gomountdirs fails after 30 seconds with error messages printed to STDERR. This gets caught by X2Go Client and then the post-startX2goMount code is triggered which removes the used pubkey from ~/.ssh/authorized_keys. Commit will come in a minute... Greets, Mike -- DAS-NETZWERKTEAM mike gabriel, herweg 7, 24357 fleckeby fon: +49 (1520) 1976 148 GnuPG Key ID 0x25771B31 mail: mike.gabriel(a)das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.x…

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