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Fwd: [ArcticaProject/nx-libs] Document compression (#802)
by Ulrich Sibiller 02 Jun '20

02 Jun '20

---------- Forwarded message --------- From: Ulrich Sibiller <uli42(a)gmx.de> Date: Sun, May 31, 2020 at 10:58 PM Subject: Re: [ArcticaProject/nx-libs] Document compression (#802) To: ArcticaProject/nx-libs <reply+ABQHBZHBGIOEJSNWVCG4BAV4372CLEVBNHHBUM3YJI(a)reply.github.com> Cc: ArcticaProject/nx-libs <nx-libs(a)noreply.github.com>, Author <author(a)noreply.github.com> "nopack" in x2go becomes "none" in NX. And it means exactly what it says: do not compress images. This setting saves CPU cycles but required more bandwidth. Images are normally cached this so this is relevant only for the tiem an image must be transferred to the other side. All the things I documented are valid for plain NX sessions (without using x2go but other software). In NX - if you don't specify a compression method explicitly but only a link type - the compression method is derived from the link type. For ADSL you correctly expect adaptive-7 as I listed in the document. Using x2go things are a bit different. The NX code is the same and so are the built-in defaults. For ADSL this is still "adaptive-7". But x2go does always provide a compression type in addition to the link type. So that default is never used but overridden by the compression settings the user specifies in x2go's session configuration. So regarding compression you always get what you select there, in your case it is "nopack" (which becomes "none" at some point because of the internal naming of the parameter). In other words: in x2go you always have to select a clever combination of link speed and compression while using plain NX you can stick with the link speed and use the defaults. If you only touch the link speed setting you will always get 16m-jpeg. I am using an own software for connection (which I cannot make public for legal reasons) and always stick with the defaults. I was not aware of this x2go behaviour. But this might explain why I don't see the performance problems I sometimes hear about from other people. So I consider this a bug. Developers: what's your opinion about this? Uli On Sun, May 31, 2020 at 10:27 PM Anton Driesse <notifications(a)github.com> wrote: > > Sorry, you lost me. > > I think you're saying nopack is the same as "no pack", but did you say what nopack really is? > > Anyway, using nopack I do observe that the choice of link makes a difference. > > ADSL gave me reasonable update speed and quality; > with MODEM I expected quick update and poor quality, but I got slow update and poor quality; > with LAN I expected and got slow update but high quality. > > — > You are receiving this because you authored the thread. > Reply to this email directly, view it on GitHub, or unsubscribe.

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Code formatting
by Dave Chamberlin-Kidd 31 May '20

31 May '20

Hi, I noticed someone else talking about auto code formatting. Is there a house style? If so is there a recommend formatting tool (I'm currently using Vs code and vi to edit)? Cheers Dave

7 18

X2Go Kdrive, current status? Ready for official release?
by Mike Gabriel 27 May '20

27 May '20

Hi Alex, I wonder when would be a good point to get X2Go Kdrive to the majority of X2Go users. I will plan some X2Go work for July and this would be a good occasion to get a new X2Go Server version out containing the X2Go Kdrive wrapper code. What's the maturity status of X2Go Kdrive? Is it releasable? If not, we should get an X2Go server release out anyway and make sure it behaves well, if no X2Go Kdrive Xserver ist installed server-side. What do people think about this? Mike -- DAS-NETZWERKTEAM c\o Technik- und Ökologiezentrum Eckernförde Mike Gabriel, Marienthaler Str. 17, 24340 Eckernförde mobile: +49 (1520) 1976 148 landline: +49 (4351) 850 8940 GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22 0782 9AF4 6B30 2577 1B31 mail: mike.gabriel(a)das-netzwerkteam.de, http://das-netzwerkteam.de

4 4

Development resources
by Ulrich Sibiller 26 May '20

26 May '20

Hi, now that Melroy and Dave want to spend time in improving x2go it came to mind that we are still lacking a long-requested feature: USB forwarding. So apart from implementing unit tests and doing code refactoring this is a great chance to make yourself immortal ;-) Uli

4 5

ICE default IO error handler doing an exit(), pid = xxxxxx, errno = 32, Fedora 32
by Robert Kudyba 26 May '20

26 May '20

On Fedora 32 with both MATE and XFCE, X2Go immediately quits with Connection failed. This stackexchange question <https://unix.stackexchange.com/questions/467507/x2go-unable-to-find-free-di…> suggests running x2godbadmin --createdb but that doesn't help. x2goagent-4.1.0.3-6.fc32.x86_64 x2goserver-xsession-4.1.0.3-6.fc32.noarch x2goserver-common-4.1.0.3-6.fc32.noarch x2goserver-4.1.0.3-6.fc32.x86_64 Connection failed. /usr/lib64/x2go/x2gocheckport: line 131: connect('dbname=/var/lib/x2go/x2go_sessions','',...): syntax error in expression (error token is "('dbname=/var/lib/x2go/x2go_sessions','',...)") Unable to find free display port or insert new session into database; parameters: port (50), hostname (ourdomain) and session name (). May 26 07:35:33 ourhostname /usr/bin/x2gostartagent[95534]: no free display number available, cannot start new session. Retrying (run 10). May 26 07:35:33 ourhostname /usr/bin/x2gostartagent[95535]: Unable to find free display port or insert new session into database; parameters: port (50), hostname (ourdomain) and session name (). cat .xsession-x2go-ourdomain.edu-errors XSession-x2go: X session started for ouruser at Sun May 24 15:26:31 EDT 2020 ** Message: 15:26:33.626: couldn't access control socket: /run/user/1200/keyring/control: No such file or directory SSH_AUTH_SOCK=/run/user/1200/keyring/ssh mate-session[141487]: WARNING: AT-SPI: Could not obtain desktop path or name mate-session[141487]: WARNING: atk-bridge: GetRegisteredEvents returned message with unknown signature mate-session[141487]: WARNING: atk-bridge: get_device_events_reply: unknown signature mate-session[141487]: WARNING: atk-bridge: get_device_events_reply: unknown signature ** (mate-settings-daemon:141818): WARNING **: 15:26:34.517: Could not open RFKILL control device, please verify your installation ** (mate-panel:141832): WARNING **: 15:26:34.586: AT-SPI: Could not obtain desktop path or name ** (mate-panel:141832): WARNING **: 15:26:34.608: atk-bridge: GetRegisteredEvents returned message with unknown signature ** (mate-panel:141832): WARNING **: 15:26:34.608: atk-bridge: get_device_events_reply: unknown signature ** (mate-panel:141832): WARNING **: 15:26:34.608: atk-bridge: get_device_events_reply: unknown signature ** (mate-settings-daemon:141818): WARNING **: 15:26:35.152: AT-SPI: Could not obtain desktop path or name ** (mate-settings-daemon:141818): WARNING **: 15:26:35.154: atk-bridge: GetRegisteredEvents returned message with unknown signature ** (mate-settings-daemon:141818): WARNING **: 15:26:35.154: atk-bridge: get_device_events_reply: unknown signature ** (mate-settings-daemon:141818): WARNING **: 15:26:35.154: atk-bridge: get_device_events_reply: unknown signature SSH_AUTH_SOCK=/run/user/1200/keyring/ssh vmware-user: could not open /proc/fs/vmblock/dev SSH_AUTH_SOCK=/run/user/1200/keyring/ssh SSH_AUTH_SOCK=/run/user/1200/keyring/ssh (caja:141846): Gtk-WARNING **: 15:26:36.752: Failed to register client: GDBus.Error:org.gnome.SessionManager.AlreadyRegistered: Unable to register client Failure: Module initialization failed ** (polkit-mate-authentication-agent-1:141982): WARNING **: 15:26:36.825: AT-SPI: Could not obtain desktop path or name ** (polkit-mate-authentication-agent-1:141982): WARNING **: 15:26:36.829: atk-bridge: GetRegisteredEvents returned message with unknown signature ** (polkit-mate-authentication-agent-1:141982): WARNING **: 15:26:36.829: atk-bridge: get_device_events_reply: unknown signature ** (polkit-mate-authentication-agent-1:141982): WARNING **: 15:26:36.829: atk-bridge: get_device_events_reply: unknown signature (uint32 1,) *** ERROR *** TI:15:26:39 TH:0x55bef6378ad0 FI:gpm-manager.c FN:gpm_manager_systemd_inhibit,1786 - Error in dbus - GDBus.Error:org.freedesktop.DBus.Error.AccessDenied: Permission denied Traceback: mate-power-manager(+0x1d304) [0x55bef5347304] mate-power-manager(+0x1478b) [0x55bef533e78b] /lib64/libgobject-2.0.so.0(g_type_create_instance+0x311) [0x7f90fcf0b1b1] /lib64/libgobject-2.0.so.0(+0x193f5) [0x7f90fceed3f5] /lib64/libgobject-2.0.so.0(g_object_new_with_properties+0x275) [0x7f90fceeeb05] /lib64/libgobject-2.0.so.0(g_object_new+0xc1) [0x7f90fceef6b1] mate-power-manager(+0x15e26) [0x55bef533fe26] mate-power-manager(+0xb20a) [0x55bef533520a] /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f90fcaa01a3] mate-power-manager(+0xb58e) [0x55bef533558e] Traceback (most recent call last): File "/usr/bin/seapplet", line 34, in <module> from setroubleshoot.config import get_config ModuleNotFoundError: No module named 'setroubleshoot.config' ** (mate-screensaver:141959): WARNING **: 15:26:39.843: AT-SPI: Could not obtain desktop path or name ** (mate-screensaver:141959): WARNING **: 15:26:39.844: atk-bridge: GetRegisteredEvents returned message with unknown signature ** (mate-screensaver:141959): WARNING **: 15:26:39.844: atk-bridge: get_device_events_reply: unknown signature ** (mate-screensaver:141959): WARNING **: 15:26:39.845: atk-bridge: get_device_events_reply: unknown signature ** (nm-applet:141855): WARNING **: 15:26:39.972: AT-SPI: Could not obtain desktop path or name ** (nm-applet:141855): WARNING **: 15:26:39.974: atk-bridge: GetRegisteredEvents returned message with unknown signature ** (nm-applet:141855): WARNING **: 15:26:39.974: atk-bridge: get_device_events_reply: unknown signature ** (nm-applet:141855): WARNING **: 15:26:39.974: atk-bridge: get_device_events_reply: unknown signature ** (evolution-alarm-notify:141952): WARNING **: 15:26:40.409: AT-SPI: Could not obtain desktop path or name ** (evolution-alarm-notify:141952): WARNING **: 15:26:40.411: atk-bridge: GetRegisteredEvents returned message with unknown signature ** (evolution-alarm-notify:141952): WARNING **: 15:26:40.411: atk-bridge: get_device_events_reply: unknown signature ** (evolution-alarm-notify:141952): WARNING **: 15:26:40.411: atk-bridge: get_device_events_reply: unknown signature Initializing caja-open-terminal extension Initializing caja-xattr-tags extension Initializing caja-image-converter extension ** (emacs:142374): WARNING **: 15:26:54.745: AT-SPI: Could not obtain desktop path or name ** (emacs:142374): WARNING **: 15:26:54.755: atk-bridge: GetRegisteredEvents returned message with unknown signature ** (emacs:142374): WARNING **: 15:26:54.755: atk-bridge: get_device_events_reply: unknown signature ** (emacs:142374): WARNING **: 15:26:54.755: atk-bridge: get_device_events_reply: unknown signature ** (mate-terminal:145225): WARNING **: 15:36:58.397: AT-SPI: Could not obtain desktop path or name ** (mate-terminal:145225): WARNING **: 15:36:58.540: atk-bridge: GetRegisteredEvents returned message with unknown signature ** (mate-terminal:145225): WARNING **: 15:36:58.540: atk-bridge: get_device_events_reply: unknown signature ** (mate-terminal:145225): WARNING **: 15:36:58.540: atk-bridge: get_device_events_reply: unknown signature (mate-screensaver:141959): GLib-CRITICAL **: 16:29:53.048: Source ID 57 was not found when attempting to remove it (mate-screensaver:141959): GLib-CRITICAL **: 17:38:18.661: Source ID 101 was not found when attempting to remove it (mate-screensaver:141959): GLib-CRITICAL **: 17:46:13.071: Source ID 161 was not found when attempting to remove it (mate-screensaver:141959): GLib-CRITICAL **: 19:07:25.615: Source ID 213 was not found when attempting to remove it ICE default IO error handler doing an exit(), pid = xxxxxx, errno = 32 (mate-settings-daemon:141818): GLib-GIO-WARNING **: 20:52:35.368: Error releasing name org.mate.SettingsDaemon.Rfkill: The connection is closed [1590348395,000,xklavier.c:xkl_engine_start_listen/] The backend does not require manual layout management - but it is provided by the application

1 0

Bug#1460: possible backtrace
by Edgar Fuß 26 May '20

26 May '20

I may have been able to obtain a backtrace (using windebug): # ChildEBP RetAddr Args to Child 00 0607e87c 771d98cb 77114c88 933a9ca3 01b70000 ntdll!RtlpValidateHeapEntry+0x63ad4 01 0607e8dc 7712dd3e 015bfd78 933a9dcf 015bfd70 ntdll!RtlDebugFreeHeap+0xc6 (FPO: [Non-Fpo]) 02 0607e9b0 77176ceb 015bfd70 015bfd78 015bfd78 ntdll!RtlpFreeHeap+0xce (FPO: [Non-Fpo]) 03 0607ea0c 7712dc16 00000000 00000000 00000000 ntdll!RtlpFreeHeapInternal+0x783 (FPO: [Non-Fpo]) 04 0607ea2c 754d7409 01b70000 00000000 015bfd78 ntdll!RtlFreeHeap+0x46 (FPO: [Non-Fpo]) 05 0607ea78 61af8e1a 015bfd78 0000008b 0000008b msvcrt!free+0x69 (FPO: [Non-Fpo]) 06 0607eac8 61ae8470 03be64f0 03addae8 0000000a libssh!ssh_threads_get_pthread+0x291a 07 0607eb08 61ae3c8c 03befbe0 03be64f0 0607eb3c libssh!ssh_pki_copy_cert_to_privkey+0x250 08 0607eb48 61ae2d84 03b1a620 00000015 03be65b0 libssh!ssh_bind_options_parse_config+0x215c 09 0607eb88 61ae3407 03b1a620 00000015 61b1b180 libssh!ssh_bind_options_parse_config+0x1254 0a 0607ebf8 61ae394f 03bc5070 00000010 03b1a620 libssh!ssh_bind_options_parse_config+0x18d7 0b 0607ec38 61ac55b7 03bc4ec0 0607ecb0 000001c0 libssh!ssh_bind_options_parse_config+0x1e1f 0c 00000000 00000000 00000000 00000000 00000000 libssh!ssh_buffer_add_data+0xe7 Unfortunately, this looks like a double free in libssh to me.

2 3

Bug#1471: New wiki account for Dave Chamberlin-Kidd
by Dave Chamberlin-Kidd 25 May '20

25 May '20

Package: wiki.x2go.org Please create a wiki account for me. First name: Dave Last name: Chamberlin-Kidd Account name: flamangoes Many thanks Dave

3 2

Bug#1472: New wiki account for melroy
by Melroy van den Berg 25 May '20

25 May '20

Package: wiki.x2go.org Please create a wiki account for me. First name: Melroy Last name: van den Berg Account name: danger89

4 7

Bug#622: New wiki account for gurumelo
by prueba 25 May '20

25 May '20

Package: wiki.x2go.org Please create a wiki account for me. First name: gurumelo Last name: gurumelo Account name: gurumelo

3 3

Re: [X2Go-Dev] Bug#1471 wiki account
by Dave Chamberlin-Kidd 25 May '20

25 May '20

Q: What kind of content do you plan to add to the X2Go wiki? A: I'm not sure yet. I'm interested in looking at the x2go client and will hopefully be able to submit some patches to help out. As I get to know the code and wiki I'm sure I'll find some info I can add to improve the docs. Cheers Dave > > ------------------------------ > > Message: 5 > Date: Tue, 19 May 2020 19:41:21 +0000 > From: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> > To: Dave Chamberlin-Kidd <dave(a)flamangoes.co.uk>, 1471(a)bugs.x2go.org > Subject: [X2Go-Dev] Bug#1471: Bug#1471: New wiki account for Dave > Chamberlin-Kidd > Message-ID: > < > 20200519194121.Horde.nF63EPEYWWgENGuW8Bn9qBy(a)mail.das-netzwerkteam.de> > > Content-Type: text/plain; charset="utf-8"; Format="flowed"; > DelSp="Yes" > > Hi Dave, > > On Di 19 Mai 2020 08:53:02 CEST, Dave Chamberlin-Kidd wrote: > > > Package: wiki.x2go.org > > > > Please create a wiki account for me. > > > > First name: Dave > > Last name: Chamberlin-Kidd > > Account name: flamangoes > > > > Many thanks > > Dave > > Thanks for your interest in contributing to the X2Go Wiki. What kind > of content do you plan to add to the X2Go wiki? > > Greets, > Mike > >

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