IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 2 December 2022 (all times are UTC)
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| 07:32 | <alkisg1> Yey, nvme disks! ltsp image / => 2.5 minutes :)
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| 13:32 | <DouglasGiovaniOe> hello
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| 13:35 | alkisg: Please, can you help me to try the process in the epopets, now can operate here. If you be free now
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| 13:35 | I am here
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| 14:34 | <alkisg1> Douglas Giovani Oechsler: (1) the client has a black screen now? (2) can you see it in epoptes?
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| 14:36 | <DouglasGiovaniOe> alkisg1: inside epopets I can login the system, only not mini pc, the boot process show at screen, but no login screen
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| 14:37 | <alkisg1> Douglas Giovani Oechsler: can you vnc to me so that I see? Because I can't really understand what you are saying
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| 14:37 | x11vnc -connect alkisg.ltsp.org
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| 14:37 | And tell me the name of the mini pc, e.g. pc01
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| 14:39 | <DouglasGiovaniOe> wait please
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| 14:40 | <alkisg1> OK, note that I have about 10 minutes currently, I'll go offline after that
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| 14:42 | <DouglasGiovaniOe> right ok
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| 14:45 | <alkisg1> "x11vnc -connect alkisg.ltsp.org" <- inside epopets?
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| 14:45 | <alkisg1> From a graphical terminal on your server
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| 14:45 | Or this one from epoptes:
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| 14:45 | !vnc-edide
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| 14:45 | <ltspbot> vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
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| 14:49 | <DouglasGiovaniOe> ltsp9
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| 14:50 | the ltsp9 was with screen error
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| 14:50 | <alkisg1> Ah
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| 14:51 | In ltsp9, tatiana has logged in
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| 14:51 | How did they log in if the screen had an error?
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| 14:51 | <DouglasGiovaniOe> logged by epopets
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| 14:52 | <alkisg1> [ 3218.396553] RIP: 0010:gen9_disable_dc_states+0x262/0x280 [i915]
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| 14:52 | [ 3218.396698] Code: 44 0f b6 e8 4c 8b 77 50 4d 85 f6 74 24 e8 66 9b e9 e5 41 89 d8 44 89 e9 4c 89 f2 48 89 c6 48 c7 c7 c8 e2 0d c1 e8 96 9e 30 e6 <0f> 0b e9 4e fe ff ff 4c 8b 37 eb d7 4c 8b 2f eb 97 e8 58 e1 3a e6
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| 14:52 | I see a xorg crash there
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| 14:52 | It's probably an issue with the graphics adapter
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| 14:52 | I need to leave now, I'll be back in 30 minutes if you want to wait
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| 14:52 | <DouglasGiovaniOe> ok
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| 14:53 | I need to go out in 10 min to lunch time
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| 14:53 | back 1 hour
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| 14:54 | can I call you?
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| 14:57 | or no problem if you want let connected there, thank you
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| 15:22 | <alkisg1> J4125 CPU @ 2.00GH, 8 GB RAM, 5.15.0-56-generic, 00:02.0 VGA compatible controller [0300]: Intel Corporation UHD Graphics 605 [8086:3185] (rev 06)
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| 15:22 | https://gitlab.freedesktop.org/drm/intel/-/issues/7302, i915.force_probe=56a5
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| 15:23 | https://termbin.com/qlh4 https://termbin.com/diyww
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| 15:24 | https://termbin.com/u7ebd
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| 15:29 | Douglas Giovani Oechsler: so with this client currently you are able to work from epoptes/vnc but in the local display you see a black screen, correct?
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| 15:29 | When you come back ping me
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| 15:56 | <joris> ok alkisg1 or anyone else... to test I copied x86_64.img from the server to the hd of the client. Mate was already installed on the client, so I modified grub to boot the image... It boots, but something is wrong. It doesn't start desktop session and I even cannot login on tty
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| 15:57 | Not sure where to start to troubleshoot. Is local cache somewhere documented?
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| 15:57 | <alkisg1> It needs ltsp.img to boot in ltsp mode
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| 15:57 | No I don't think it's documented in detail anywhere
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| 15:58 | <joris> ah ok thanks so I just copy ltsp.img from the server also on the client?
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| 15:58 | <alkisg1> Here's how my liveusb loads ltsp images: https://github.com/alkisg/liveusb/blob/main/grub.cfg#L168
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| 15:59 | <joris> oh ok cool!
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| 15:59 | <alkisg1> Copy/adjust these lines there
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| 16:00 | <joris> very helpful!
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| 16:15 | <DouglasGiovaniOe> <alkisg1> "Douglas Giovani Oechsler: so..." <- Yes, exactly
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| 16:15 | I amback
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| 16:15 | I am back
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| 16:16 | <alkisg1> Douglas Giovani Oechsler: reconnect with vnc as the connection failed
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| 16:16 | !vnc-edide
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| 16:16 | <ltspbot> vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
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| 16:16 | <DouglasGiovaniOe> yes
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| 16:20 | <alkisg1> Douglas Giovani Oechsler: reboot ltsp9 and see if the problem happens again now
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| 16:20 | I configured it to boot with the older -53 kernel
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| 16:20 | You're saying that this problem started after an update, right?
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| 16:21 | <DouglasGiovaniOe> yes, correct
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| 16:21 | <alkisg1> reboot ltsp9 and see if the problem happens again now
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| 16:22 | <DouglasGiovaniOe> one minute
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| 16:24 | <DouglasGiovaniOe> Tatiana is starting mini pc
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| 16:28 | <DouglasGiovaniOe> no screen
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| 16:30 | <alkisg1> [ 275.829058] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] ERROR [CONNECTOR:155:HDMI-A-1] commit wait timed out
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| 16:31 | <DouglasGiovaniOe> maybe after upgrade system?
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| 16:32 | <alkisg1> It sounds like a graphics drivers or kernel issue, completely unrelated to ltsp
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| 16:32 | Either that, or a sudden hardware problem :)
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| 16:32 | <DouglasGiovaniOe> humm
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| 16:32 | <alkisg1> A last try with the previous image; if it doesn't work with that, then you should install a local operating system and troubleshoot there without ltsp
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| 16:33 | <DouglasGiovaniOe> ahhh yes
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| 16:34 | <alkisg1> It works now?
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| 16:35 | <DouglasGiovaniOe> let me see
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| 16:38 | <DouglasGiovaniOe> let me do the question: Can be server hardware problem or mini pc hardware?
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| 16:38 | <alkisg1> Did it work now? Someone rebooted it
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| 16:38 | <DouglasGiovaniOe> no screen
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| 16:39 | so someone reboot it
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| 16:39 | <alkisg1> Now it didn't have any errors in the logs
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| 16:39 | Are you sure there was no screen now?
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| 16:39 | Try to boot it again and see
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| 16:41 | Now it has errors in the logs
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| 16:41 | And someone rebooted it again :)
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| 16:42 | The server hardware is fine
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| 16:42 | <DouglasGiovaniOe> yes after you ask to reboot
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| 16:43 | no screen again
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| 16:46 | <alkisg1> Do you have another PC with the same hardware?
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| 16:46 | <DouglasGiovaniOe> no
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| 16:47 | <alkisg1> OK let's wait for ltsp image to finish, and test with the newer kernel. Ping me when ltsp image finishes.
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| 16:48 | <DouglasGiovaniOe> right
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| 16:56 | alkisg: finished
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| 17:02 | <alkisg1> Douglas Giovani Oechsler: I already rebooted the clent. Does it work now?
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| 17:05 | <DouglasGiovaniOe> wait
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| 17:06 | no screen again
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| 17:06 | <alkisg1> Someone logged in
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| 17:06 | Did you use epoptes to log in?
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| 17:07 | also someone rebooted it before we could see the logs
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| 17:07 | <DouglasGiovaniOe> have screen epopets up ask login
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| 17:07 | I think you ask to login
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| 17:08 | <alkisg1> I asked "does it work now?"
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| 17:08 | If you use epoptes to control the client we don't learn anything
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| 17:08 | The point is to see if the screen is blank or not
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| 17:08 | Also do not reboot it because we can't see the logs. I'll reboot it when needed.
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| 17:08 | <DouglasGiovaniOe> the screen is black
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| 17:09 | no reeboot now
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| 17:10 | so, can control it please, I will only see and do what do you want
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| 17:11 | <alkisg1> Now I'm testing to disable the intel driver and use vesa
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| 17:11 | <DouglasGiovaniOe> right
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| 17:14 | <alkisg1> Now ask them if the screen is black
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| 17:14 | <DouglasGiovaniOe> yes get screeen
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| 17:14 | <alkisg1> OK so the problem is the graphics driver
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| 17:15 | * DouglasGiovaniOe uploaded an image: (143KiB) < https://libera.ems.host/_matrix/media/v3/download/matrix.org/QbDInOncokHLFWUrgKXfznSj/WhatsApp%20Image%202022-12-02%20at%2014.14.17.jpeg > | |
| 17:15 | <alkisg1> It is not related to LTSP. You can use it with the VESA driver like it is now. To solve it properly, you need to file a bug report or hire a technicial to troubleshoot the graphics issues for you
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| 17:15 | <DouglasGiovaniOe> the client
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| 17:15 | <alkisg1> Now it will be slower than normal
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| 17:16 | <DouglasGiovaniOe> and not make upgrade?
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| 17:17 | <alkisg1> You can upgrade normally. I made the change in ltsp.conf, it's not affected by upgrades.
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| 17:19 | <DouglasGiovaniOe> can be not good driver video onboard on server?
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| 17:20 | <alkisg1> No
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| 17:20 | This is about the graphics driver for the pc09 client. The server is not involved in this.
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| 17:22 | <DouglasGiovaniOe> Alkis
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| 17:22 | now other client stay without screen! Jesus
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| 17:23 | or ask to guy to restart
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| 17:23 | <alkisg1> Which other client? Yes, tell them to restart that other client.
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| 17:23 | <DouglasGiovaniOe> right
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| 17:23 | wait please
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| 17:23 | alkisg1: owww, bad product so
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| 17:24 | <alkisg1> Bad linux. Not bad hardware.
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| 17:25 | <DouglasGiovaniOe> the other client reboot but not screen
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| 17:25 | alkisg1: what do you think the best Linux for Ltsp?
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| 17:26 | <alkisg1> There is only one Linux. I'm talking about the kernel, not the distribution.
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| 17:26 | The Linux kernel 5.15.0.50 worked for you, then the next kernels didn't work for you.
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| 17:28 | <DouglasGiovaniOe> so the way is not update kernel when all works well
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| 17:29 | <alkisg1> No, because then you'll get security problems and you'll get hacked
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| 17:33 | <DouglasGiovaniOe> alkisg: can you see about the other client, now other no screen
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| 17:33 | <alkisg1> Douglas Giovani Oechsler: vnc got disconnected, do connect again
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| 17:33 | !vnc-edide
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| 17:33 | <ltspbot> vnc-edide: To share your screen with me, open Epoptes → Help menu → Remote support → Host: srv1-dide.ioa.sch.gr, and click the Connect button
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| 17:33 | <DouglasGiovaniOe> now other problems with pc09 no click mouse amd pc07 no screen
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| 17:34 | <alkisg1> [ 89.553870] snd_hda_intel 0000:00:0e.0: Cannot probe codecs, giving up
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| 17:34 | [ 100.530748] UBSAN: shift-out-of-bounds in /build/linux-hwe-5.15-jemPrJ/linux-hwe-5.15-5.15.0/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c:2511:27
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| 17:37 | Douglas Giovani Oechsler: are you saying that the screen in ltsp7 is black now?
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| 17:37 | <DouglasGiovaniOe> yes
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| 17:38 | <alkisg1> How many clients do you have in total?
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| 17:38 | <DouglasGiovaniOe> only 2
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| 17:38 | <alkisg1> You're using LTSP for just 2 clients?
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| 17:38 | <DouglasGiovaniOe> yes
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| 17:39 | <alkisg1> I thought you were mentioning a lot of vlans and subnets on github
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| 17:40 | <DouglasGiovaniOe> alkisg1: This place with 2 clients is sister's office
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| 17:40 | <alkisg1> Is the screen black now too?
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| 17:40 | <DouglasGiovaniOe> The other place in on the city hall
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| 17:41 | where I work
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| 17:41 | <alkisg1> OK! Does ltsp7 have a black screen now?
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| 17:42 | <DouglasGiovaniOe> alkisg1: no
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| 17:42 | <alkisg1> OK, let's reboot both PCs and make sure they both work now
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| 17:42 | Then don't touch them for a while :D
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| 17:43 | <DouglasGiovaniOe> only show boot client but not screen login
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| 17:43 | <alkisg1> I put your previous image back
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| 17:43 | So if it worked 5 hours ago and it's not working now, I don't know what it means
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| 17:44 | -rw-r--r-- 1 root root 5007896576 nov 30 13:42 x86_64.img
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| 17:44 | The image is 2 days old, it's the one you had
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| 17:47 | <DouglasGiovaniOe> the old image works perfect for pc07 but not pc09, so I am trying to do work, but, the true is after update and upgrade xubuntu starts erros
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| 17:47 | <alkisg1> Now we have the old image and you say that pc07 doesn't work
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| 17:47 | Anyway. All these issues are not related to LTSP. I put your old image back, so it's like you had it yesterday without changes from me.
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| 17:48 | I suggest that you do not use LTSP for these 2 clients, because they have many problems, and LTSP is making things difficult for you.
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| 17:48 | If you install Ubuntu in a local disk without LTSP, you'll be able to go to e.g. #ubuntu and ask for help, now with LTSP troubleshooting gets complicated.
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| 17:48 | <DouglasGiovaniOe> Ltsp was working there 2 years whitout issues
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| 17:49 | <alkisg1> Yes, it's not a problem with ltsp. LTSP still works without issues.
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| 17:49 | The problem is in Linux. It started now. And you cannot troubleshoot easily because of LTSP.
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| 17:50 | Anyway, I put your old image back, so things are now the same as they were yesterday. I close VNC. Good luck!
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| 18:10 | <DouglasGiovaniOe> right
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| 18:10 | thank you
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| 18:10 | <alkisg1> 👍️
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| 18:15 | <DouglasGiovaniOe> We go switch to other distro, from 2022. Because since October it starts show some problems, before this, all was working nice.
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| 18:16 | <alkisg1> All distributions use Linux, so will have the same problems
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| 18:16 | You need to read what the Linux kernel is. It's the same for all distributions.
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| 18:17 | <DouglasGiovaniOe> yes I know about, only "construction" are different, all are linux yes
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