[X2Go-Dev] X2Go KDrive

Mon Jun 17 09:22:48 CEST 2019

Hi Mike,

Initially i started to develop X2Go KDrive based on source code of
xorg-server-1.19.2. I made some patches to port it for some older
versions used by SLES12SP1 and Leap42.3. I didn't try it yet with newer
versions of XOrg, however I think it should not be a big deal. Looking
on the log you provided, I could guess that the problem is somewhere in
the XRandr handling. But I would need to take a closer look to be sure.

Regards
Alex

Am 14.06.19 um 15:50 schrieb Mike Gabriel:
> Hi Alex,
> 
> On  Do 20 Dez 2018 15:37:12 CET, Oleksandr Shneyder wrote:
> 
>> Hi All,
>>
>> I'm glad to introduce you a new X2Go feature - X2Go KDrive.
>> X2Go KDrive is a new X-Server for X2Go, similar to Xephyr. It's based on
>> the recent X.Org code and can run modern desktops and apps, like Gnome-3
>> and KDE-5. I uploaded some sources to our git repository. It's not a
>> release or even testing version, just kind of review at the moment. We
>> don't have any build system for it yet. However I wrote some
>> instructions, which could help you to build it.
>>
>> check our wiki page if you need more information:
>>
>> https://wiki.x2go.org/doku.php/wiki:advanced:x2gokdrive:start
>>
>> regards,
>> Alex
> 
> Stefan managed to get some funding for me to work on wrapping up X2Go
> KDrive (Agent + Client) as DEB packages.
> 
> I have committed quite some stuff to the repos, more to come the coming
> week. Please review. Especially, I prepared native builds against the
> DEB package xserver-xorg-source.
> 
> I also ported the nx-libs test scripts. With X2Go Client and also with
> the "on-localhost" testscript, I get this segfault:
> 
> However, I currently get this SegFault Traceback when initiating a
> connection:
> 
> ```
> x2gokdriveinit.c:194,ddxProcessArgument() mark argv[1]='-name'
> x2gokdriveinit.c:194,ddxProcessArgument() mark argv[3]='-geometry'
> x2gokdriveinit.c:194,ddxProcessArgument() mark argv[5]=':9'
> x2gokdriveinit.c:233,OsVendorInit() mark
> x2gokdriveinit.c:65,InitCard() mark
> x2gokdriveinit.c:170,processScreenOrOutputArg() screen number:0, size:
> 800x600, output (null)
> 
> remote.c:2288,remote_init() running in NXAGENT MODE
> remote.c:2297,remote_init() read options from /home/mike/.x2go/C-9/options
> remote.c:2177,processConfigFileSetting() accept 127.0.0.1
> remote.c:1709,setAgentState() Agent state STARTING
> remote.c:2058,open_socket() Accepting connections from 127.0.0.1
> remote.c:2061,open_socket() Listen on port 15000
> remote.c:2089,open_socket() Socket is ready
> x2gokdriveselection.c:640,selection_init() INITIALIZING selections
> x2gokdriveselection.c:657,install_selection_callbacks() SERVER CLIPBOARD
> disabled, not installing callbacks
> x2gokdrive.c:98,ephyrScreenInitialize() Init screen
> remote.c:2987,remote_screen_init() REMOTE SCREN INIT!!!!!!!!!!!!!!!!!!
> remote.c:2990,remote_screen_init() SKIPPING CALLBACK INSTALL
> remote.c:3001,remote_screen_init() host_screen=0x5645af625e60 x=0, y=0,
> wxh=800x600, buffer_height=1800
> remote.c:3014,remote_screen_init() TRYING TO ALLOC  MAIN_IMG 1920000
> remote.c:3016,remote_screen_init() TRYING TO ALLOC  DOUBLE BUF 1920000
> remote.c:1321,send_frame_thread() Started sending thread: #0!
> 
> remote.c:1325,send_frame_thread() waiting for TCP connection
> 
> remote.c:3021,remote_screen_init() ALL INITIALIZED
> x2gokdrive.c:244,ephyrMapFramebuffer() DIRECT FB
> x2gokdrive.c:834,ephyrRandRInit() RANDR INIT, HERE WE ARE DOING OUR
> RANDR INITIALIZATION
> x2gokdrive.c:835,ephyrRandRInit() OUTPUTS: 0, CRTCS: 0, SIZES: 0
> x2gokdrive.c:781,addOutput() CREATE OUTPUT X2GoEphyr-0
> x2gokdrive.c:673,setOutput() Set output 800 600 0 0
> x2gokdrive.c:732,setOutput() RANDR SIZES - SCREEN 800x600 - 271x203,
> OUTPUT 800x600 - 271x203
> x2gokdrive.c:751,setOutput() OUPUT has now modes 1 (800x600)
> remote.c:1332,send_frame_thread() Connection from (127.0.0.1)...
> 
> remote.c:1378,send_frame_thread() got 32 COOKIE BYTES from client
> remote.c:1387,send_frame_thread() Cookie approved
> remote.c:1709,setAgentState() Agent state RUNNING
> remote.c:1918,clientReadNotify() Client want resize to 1276x454
> remote.c:1934,clientReadNotify() SCREEN 0 - (1276x454) - 0,0
> x2gokdrive.c:861,ephyrResizeScreen() EPHYR RESIZE SCREEN!!! af6392f0
> 1276 454
> x2gokdrive.c:864,ephyrResizeScreen() EPHYR RESIZE SCREEN 2
> x2gokdrive.c:869,ephyrResizeScreen() Virtual Screens: 0x7ffd5d23c9e0
> x2gokdrive.c:438,ephyrRandRSetConfig() SET RANDR CFG
> x2gokdrive.c:456,ephyrRandRSetConfig() Trying to get virtual screens
> x2gokdrive.c:457,ephyrRandRSetConfig() Virtual Screens: 0x7ffd5d23c9e0
> remote.c:2987,remote_screen_init() REMOTE SCREN INIT!!!!!!!!!!!!!!!!!!
> remote.c:2995,remote_screen_init() REINSTALL CALLBACKS
> x2gokdriveselection.c:657,install_selection_callbacks() SERVER CLIPBOARD
> disabled, not installing callbacks
> remote.c:3001,remote_screen_init() host_screen=0x5645af625e60 x=0, y=0,
> wxh=1276x454, buffer_height=1362
> remote.c:3010,remote_screen_init() FREE DBF
> remote.c:3012,remote_screen_init() DONE FREE DBF
> remote.c:3014,remote_screen_init() TRYING TO ALLOC  MAIN_IMG 2317216
> remote.c:3016,remote_screen_init() TRYING TO ALLOC  DOUBLE BUF 2317216
> remote.c:3021,remote_screen_init() ALL INITIALIZED
> x2gokdrive.c:244,ephyrMapFramebuffer() DIRECT FB
> (EE)
> (EE) Backtrace:
> (EE) 0: x2gokdrive (OsLookupColor+0x139) [0x5645ad81fc69]
> (EE) 1: /lib/x86_64-linux-gnu/libpthread.so.0 (funlockfile+0x50)
> [0x7fb9bc68177f]
> (EE) 2: x2gokdrive (GetScratchGC+0x31) [0x5645ad6f27c1]
> (EE) 3: x2gokdrive (miPaintWindow+0x182) [0x5645ad749082]
> (EE) 4: x2gokdrive (miWindowExposures+0xf2) [0x5645ad748e72]
> (EE) 5: x2gokdrive (miHandleValidateExposures+0x6e) [0x5645ad75771e]
> (EE) 6: x2gokdrive (SetRootClip+0x1f3) [0x5645ad70b703]
> (EE) 7: x2gokdrive (SwapShorts+0x49c) [0x5645ad72624c]
> (EE) 8: x2gokdrive (_start+0x70b0) [0x5645ad6e8b70]
> (EE) 9: x2gokdrive (_start+0x7496) [0x5645ad6e98e6]
> (EE) 10: x2gokdrive (_start+0x4faf) [0x5645ad6e4baf]
> (EE) 11: x2gokdrive (OsCleanup+0x591) [0x5645ad820a61]
> (EE) 12: x2gokdrive (WaitForSomething+0x1c3) [0x5645ad819883]
> (EE) 13: x2gokdrive (SendErrorToClient+0x10c) [0x5645ad71d59c]
> (EE) 14: x2gokdrive (InitAtoms+0x3c6) [0x5645ad6e4b46]
> (EE) 15: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xeb)
> [0x7fb9bc4d009b]
> (EE) 16: x2gokdrive (_start+0x2a) [0x5645ad6db0fa]
> (EE)
> (EE) Segmentation fault at address 0x564500000008
> (EE)
> Fatal server error:
> (EE) Caught signal 11 (Segmentation fault). Server aborting
> (EE)
> ```
> 
> Does the above segfault and traceback ring a bell? If not, never mind. I
> will dive into it the coming week.
> 
> Note: I also merged the feature/kdrive_support branch found on
> x2goserver.git and x2goclient.git to master.
> 
> Greets,
> Mike

-- 
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Oleksandr Shneyder        | Email: o.shneyder at phoca-gmbh.de
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