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Here it is:
gdbus call --session --dest org.gnome.Mutter.DisplayConfig --object-path /org/gnome/Mutter/DisplayConfig --method org.gnome.Mutter.DisplayConfig.GetResources
(uint32 1, [(uint32 0, int64 43, 1920, 0, 1600, 1200, 48, uint32 0, [uint32 0, 1, 2, 3, 4, 5, 6, 7], @a{sv} {}), (1, 45, 0, 0, 1920, 1080, 55, 0, [0, 1, 2, 3, 4, 5, 6, 7], {}), (2, 47, 0, 0, 0, 0, -1, 0, [0, 1, 2, 3, 4, 5, 6, 7], {}), (3, 49, 0, 0, 0, 0, -1, 0, [0, 1, 2, 3, 4, 5, 6, 7], {})], [(uint32 0, int64 4294967347, 0, [uint32 0, 1, 2, 3], 'DP-1', [uint32 48, 52, 27, 40, 31, 28, 21, 45, 47, 46, 56, 54, 36, 10, 34, 8, 57, 1, 17, 38, 29, 18, 9], @au [], {'vendor': <'DEL'>, 'product': <'DELL 2007FP'>, 'serial': <'C953665T311S'>, 'width-mm': <410>, 'height-mm': <310>, 'display-name': <'DP-1'>, 'backlight': <-1>, 'min-backlight-step': <-1>, 'primary':, 'presentation': , 'connector-type': <'DisplayPort'>, 'underscanning': , 'supports-underscanning': , 'supports-color-transform': , 'edid': <[byte 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x10, 0xac, 0x21, 0xa0, 0x53, 0x31, 0x31, 0x33, 0x16, 0x10, 0x01, 0x03, 0x80, 0x29, 0x1f, 0x78, 0xee, 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54, 0xa5, 0x4b, 0x00, 0x81, 0x80, 0xa9, 0x40, 0x71, 0x4f, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x48, 0x3f, 0x40, 0x30, 0x62, 0xb0, 0x32, 0x40, 0x40, 0xc0, 0x13, 0x00, 0x6f, 0x13, 0x11, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0xff, 0x00, 0x43, 0x39, 0x35, 0x33, 0x36, 0x36, 0x35, 0x54, 0x33, 0x31, 0x31, 0x53, 0x0a, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x44, 0x45, 0x4c, 0x4c, 0x20, 0x32, 0x30, 0x30, 0x37, 0x46, 0x50, 0x0a, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x38, 0x4c, 0x1e, 0x53, 0x11, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0xd5]>}), (1, 4294967349, 1, [0, 1, 2, 3], 'DVI-I-1', [55, 50, 22, 27, 40, 31, 28, 21, 45, 47, 46, 56, 54, 36, 10, 34, 8, 57, 1, 17, 38, 29, 18, 9], [], {'vendor': <'DEL'>, 'product': <'DELL P2310H'>, 'serial': <'N918R0170P2S'>, 'width-mm': <510>, 'height-mm': <290>, 'display-name': <'DVI-I-1'>, 'backlight': <-1>, 'min-backlight-step': <-1>, 'primary': , 'presentation': , 'connector-type': <'DVII'>, 'underscanning': , 'supports-underscanning': , 'supports-color-transform': , 'edid': <[byte 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x10, 0xac, 0x28, 0xd0, 0x53, 0x32, 0x50, 0x30, 0x01, 0x14, 0x01, 0x03, 0x80, 0x33, 0x1d, 0x78, 0x2e, 0xee, 0x95, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54, 0xa5, 0x4b, 0x00, 0x71, 0x4f, 0x81, 0x80, 0xd1, 0xc0, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c, 0x45, 0x00, 0xfd, 0x1e, 0x11, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0xff, 0x00, 0x4e, 0x39, 0x31, 0x38, 0x52, 0x30, 0x31, 0x37, 0x30, 0x50, 0x32, 0x53, 0x0a, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x44, 0x45, 0x4c, 0x4c, 0x20, 0x50, 0x32, 0x33, 0x31, 0x30, 0x48, 0x0a, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x38, 0x4c, 0x1e, 0x53, 0x11, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0xc3]>})], [(uint32 0, int64 0, uint32 1536, uint32 2048, 59.953784942626953, uint32 9), (1, 1, 800, 600, 75.0, 5), (2, 2, 2048, 1152, 59.903182983398438, 6), (3, 3, 5120, 2880, 59.987163543701172, 6), (4, 4, 1152, 2048, 59.903182983398438, 9), (5, 5, 960, 1280, 59.939048767089844, 9), (6, 6, 2048, 1536, 59.953784942626953, 6), (7, 7, 1620, 2880, 59.960258483886719, 9), (8, 8, 1024, 768, 60.003841400146484, 10), (9, 9, 640, 480, 59.940475463867188, 10), (10, 10, 1152, 864, 59.958633422851562, 6), (11, 11, 768, 1024, 59.920131683349609, 9), (12, 12, 800, 1280, 59.810325622558594, 9), (13, 13, 900, 1600, 59.946022033691406, 9), (14, 14, 1080, 1440, 59.988838195800781, 9), (15, 15, 1050, 1680, 59.954250335693359, 9), (16, 16, 1920, 1440, 59.967990875244141, 6), (17, 17, 800, 600, 60.316539764404297, 5), (18, 18, 640, 480, 75.0, 10), (19, 19, 1080, 1920, 59.962844848632812, 9), (20, 20, 2880, 5120, 59.987163543701172, 9), (21, 21, 1368, 768, 59.882049560546875, 6), (22, 22, 1680, 1050, 59.954250335693359, 6), (23, 23, 1050, 1400, 59.978443145751953, 9), (24, 24, 1920, 1200, 59.884601593017578, 6), (25, 25, 864, 1152, 59.958633422851562, 9), (26, 26, 3200, 1800, 59.956130981445312, 6), (27, 27, 1600, 900, 59.946022033691406, 6), (28, 28, 1400, 1050, 59.978443145751953, 6), (29, 29, 720, 400, 70.0816650390625, 6), (30, 30, 1800, 3200, 59.956130981445312, 9), (31, 31, 1440, 900, 59.887443542480469, 6), (32, 32, 1440, 1920, 59.967990875244141, 9), (33, 33, 4096, 2304, 59.989021301269531, 6), (34, 34, 1024, 768, 75.028579711914062, 5), (35, 35, 1200, 1920, 59.884601593017578, 9), (36, 36, 1152, 864, 75.0, 5), (37, 37, 720, 1280, 59.855125427246094, 9), (38, 38, 800, 600, 59.861404418945312, 6), (39, 39, 1600, 2560, 59.986587524414062, 9), (40, 40, 1440, 1080, 59.988838195800781, 6), (41, 41, 2880, 1620, 59.960258483886719, 6), (42, 42, 900, 1440, 59.887443542480469, 9), (43, 43, 2560, 1600, 59.986587524414062, 6), (44, 44, 2160, 3840, 59.980926513671875, 9), (45, 45, 1280, 1024, 75.024673461914062, 5), (46, 46, 1280, 960, 59.939048767089844, 6), (47, 47, 1280, 1024, 60.019741058349609, 5), (48, 48, 1600, 1200, 60.0, 5), (49, 49, 1200, 1600, 59.869106292724609, 9), (50, 50, 1920, 1080, 59.962844848632812, 6), (51, 51, 768, 1368, 59.882049560546875, 9), (52, 52, 1600, 1200, 59.869106292724609, 6), (53, 53, 2560, 1440, 59.960628509521484, 6), (54, 54, 1280, 720, 59.855125427246094, 6), (55, 55, 1920, 1080, 60.0, 5), (56, 56, 1280, 800, 59.810325622558594, 6), (57, 57, 1024, 768, 59.920131683349609, 6), (58, 58, 600, 800, 59.861404418945312, 9), (59, 59, 3840, 2160, 59.980926513671875, 6), (60, 60, 1440, 2560, 59.960628509521484, 9), (61, 61, 2304, 4096, 59.989021301269531, 9)], 65535, 65535) Please see the attached.
Service side debug level log during remote control with –eglcapture set to no.There is a no problem with
sudo /usr/NX/bin/nxserver --eglcapture no.
I use dual monitor setup on Rocky Linux, with eglcapture disabled, I lose the ability to select which monitor to display. Instead, both displays are showing, and I can choose either scale both to the client monitor size, or “enable view point mode”.I have not yet tried resizing the remote display.
AH yes, after
sudo /usr/NX/bin/nxserver --eglcapture no
follow by areboot, the performance issue appears to go away.Disabling egl did not help.
I also tried playing around with Server Performance setting on the Linux host.
Default settings are:
- unchecked – Use a specific display encoding
- checked – use hardware encoding
- unchecked – Use a specific display frame rate
- checked – Use acceleration for display processing.
I tried disabling hardware encoding, and acceleration for display processing, enabling specific display encoding (VP8, MPEG, H.264), using a specific display frame rate (30FPS), none of it did any improvement.
I have attached the server side logs that include all the activities above.
The logs had to be split to meet the 1024kb requirement, and I added .zip to the z01, z02, or else the forum won’t let me upload them.
You will have to rename them before combing:
Server logs 2026-01-08 12.36.08.z01.zip -> need to be renamed as: Server logs 2026-01-08 12.36.08.z01
Server logs 2026-01-08 12.36.08.z02.zip -> need to be renamed as: Server logs 2026-01-08 12.36.08.z02
Server logs 2026-01-08 12.36.08.zip -> does not need to be renamed.Then combine with $zip -FF ‘Server logs 2026-01-08 12.36.08.zip’ –out full.zip“
9.3.7.1 solved the black screen issue when connecting a Rocky Linux remote host from a Windows 11 Client.
However, the performance is so bad that it is unusable. I’ll create a another post about this new issue.
Here’s the ps output (it won’t let me post file with extension .log), so here it is the ps -ef outout:
Sure thing. Here they are. I performed a logrotate before restarting. I can also confirm that the server display was on at all times; it was not sleeping or suspended.
In fact, after connecting from a Windows client, I can see the NoMachine note on the top right corner of the Linux host stating a user ‘username from IP xxx connected, a second note also states “Your desktop is currently viewed”. But the client NoMachine window remains blackscreen, the mouse cursor, however, changed its shape to match the host.