I don't know how to do that for system processes. Please tell me.
Try:
sudo apt install - y libgdm1=3.28.0-0ubuntu1
sudo apt install -y gir1.2-gdm-1.0=3.28.0-0ubuntu1
sudo apt install -y gdm3
Alternatively, you can try:
sudo apt --fix-broken install
It's that time of morning- I have to drive to the airport- back in about an hour or so.
In the link I posted above, please scroll down far enough to see
"Steps to find memory leak"
It has detailed step by step walkthrough that may help.
Once you go through the steps you can post the memory dump here in this thread.
Downgrading gdm3 didn’t help. The problem still exists.
I tried to follow the memory dump step by step but on running strings command on my memory.dump file didn’t gave anything as output. Besides I think I didn’t much understood diff command step and what do actually I have to look for in the difference.
I ran all this on a process call gdm with command /usr/bin/gnome-shell , I am not sure even if I did that correctly.
Do the output from syslog that I gave really not help in identifying the problem ?
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Well, it was worth a shot to roll back GDM3. You can roll it back forward, if you like.
sudo apt full-upgrade
The only output I see in the logs above that I think relate is the one I quoted that made me immediately think that too many file descriptors are open. You also mentioned
JS ERROR: GLib.Error g-unix-error-quark: Too many open files
Normally, cleaning out some space can resolve the issue. In your case, though, it is affecting Login and On Wake. Which means cache and such should have cleared on logout.
On the steps in the link- It may be outdated.
Can you run in terminal:
gnome-shell --version
and post the output here.
Same with:
cat /proc/meminfo
You might consider using htop to display memory usage, then run htop in terminal and let it run while you work on other tasks and go about your normal computering business- IF you notice a slow down or performance drop, look at the terminal window running htop for a large wad of memory being gobbled up.
sudo apt install htop
htop
and you can relay that output here.
Here is an example of htop running on my machine:
GNOME Shell 3.30.2
MemTotal: 7995024 kB
MemFree: 3701968 kB
MemAvailable: 5164916 kB
Buffers: 544964 kB
Cached: 1577884 kB
SwapCached: 0 kB
Active: 2483744 kB
Inactive: 475604 kB
Active(anon): 1557880 kB
Inactive(anon): 19084 kB
Active(file): 925864 kB
Inactive(file): 456520 kB
Unevictable: 719512 kB
Mlocked: 16 kB
SwapTotal: 9999356 kB
SwapFree: 9999356 kB
Dirty: 276 kB
Writeback: 0 kB
AnonPages: 1556144 kB
Mapped: 560256 kB
Shmem: 740468 kB
KReclaimable: 389308 kB
Slab: 458648 kB
SReclaimable: 389308 kB
SUnreclaim: 69340 kB
KernelStack: 15424 kB
PageTables: 57188 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 13996868 kB
Committed_AS: 7458228 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 31764 kB
VmallocChunk: 0 kB
Percpu: 2624 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
ShmemHugePages: 0 kB
ShmemPmdMapped: 0 kB
FileHugePages: 0 kB
FilePmdMapped: 0 kB
CmaTotal: 0 kB
CmaFree: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
Hugetlb: 0 kB
DirectMap4k: 212604 kB
DirectMap2M: 5922816 kB
DirectMap1G: 2097152 kB
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Almost 14 gigs in your commit limit. You are not even using any swap space currently.
Are you working with heavy resource or graphics intensive projects during the times when you have the login issue and errors? Can you recall any software you were consistently using each time (Not including Gnome-shell :P)
Firefox is the most resource intensive app that I use. But as I said before, This problem occurs even if I have empty workspace.
Ok. I was hoping that you might say it was GImp or some non-integrated software that we could narrow doing a possible memory leak to.
what does (terminal) this yield:
ulimit -n
?
1024
.
Ok, can you increase your limit:
sudo nano /etc/systemd/system.conf
arrow key down to the line that says:
#DefaultLimitNOFILE=
Remove the hashtag in front of that line...
and change it to
DefaultLimitNOFILE=65536
Save and exit
ctrl+x
hit y key to say yes to save
hit enter key to save as current file
Terminal will revert to normal.
EDIT: Correction, it is in one more file, too:
sudo nano /etc/systemd/user.conf
And repeat all the same steps above.
At this point... can only test and see what that results in with use.
I made a text file using grep on PID
and hence got a cleaned version of everything that was happening in that GNOME shell process at an ongoing Login Glitch.
Then I did a search for (in the text file)
and that number came out to be 256
Which is a number that easily catches attention of a person good with binaries.
I searched for this error on web
and found that it was generated due to some extensions on GNOME on ubuntu 18.04, which is what Zorin 15 is based on. Here is one such link
This appears to be an extensions related problem even in my case.
I would find out more. Please keep assisting me.
I wonder if I should have you helping me.
I did see some errors related to extensions in your logs- including gcampax. But I was more dismissive of those.
You might check your version of JDK.
If you like, you can try removing and reinstalling the extensions.
sudo apt remove --purge gnome-shell-extensions-zorin-desktop
After Removing, reinstall:
sudo apt-get install gnome-shell-extensions-zorin-desktop
The below list is based off the gcampax-
sudo apt-get install gnome-shell-extension-zorin-printers
sudo apt-get install gnome-shell-extension-printers
sudo apt-get install gnome-shell-extension-zorin-app-grid
sudo apt-get install gnome-shell-extension-zorin-window-move-effect
Before reading this i did a --reinstall command on that package, but that didn't help. I will try now purging it. But first I am preparing a ZorinOS Lite 15.3 bootable drive (just in case).
I have a timeshift backup. But I am not sure if that backup excludes this error.
I feel your pain. I just wiped and reinstalled Zorin OS earlier today. Fortunately, all my back ups were solid and I am pretty much right back to where I was. Minus gtk 3.24, now.
Interestingly, the reason I reinstalled was due to a Memory Leak in the File Manager that I just could not correct. I must point out, I use Cinnamon D.E. with Nemo FM. Not Gnome.
^That right there, is why I do not Timeshift.
I back up Home Folder and configuration only.
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If you don’t want Zorin’s preconfigured GNOME (or xfce), why use Zorinos?
There is more to Zorin OS than just the D.E.
Cpu usage and performance, better backports, less fluff, more stability.
Running Cinnamon on Zorin OS is smooth and fast. Run Cinnamon on Mint and it bogs down after 30mins to an hour.
Sometime back, I did try to get away from using Zorin OS. I did a lot of distro hopping, testing on an aging machine. Zorin OS outperformed all the rest.
There’s a thread about it on the old ZorinGroupForum.
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Wow.
I am however in my distro hoping phase. I tried Zorin about two months ago. And then with a mood to settle on some distro I am back on Zorin at least till ubuntu 21.04 arrives. I don’t like Gnome on my laptop. Its quite buggy and heavy. I just have 8GB memory on my system. I like KDE most, xfce is also good enough (I don’t like its application launcher).
Last time when I was on Zorin I tried Zorinos Lite. This time I thought lets give core 15.3 a shot, but then this Thread happened 
.
I tried purging and reinstalling gnome-shell-extensions-zorin-desktop but broke my distribution, rolled back to my oldest timeshift backup. The problem wasn’t gone, but most of my config were gone.
Now that they are gone, and the fact that I don’t much like Gnome. I think of going back to zorin os lite , after giving some last tries to fix the problem.
I am quite sure at this point that the problem is not hardware compatibility, its kinda coming from the Zorin Gnome desktop itself.
Is there a smooth way to remove and reinstall zorin os desktop?
Definitely. I have done it by accident. More than once... LOL
I started out on Zorin, coming from Windows.
That was on Core, Gnome desktop. For me, personally, it was a terrible start. As you say, Gnome was buggy, resource heavy, not user friendly and often counter-intuitive.
I struggled with it a lot and those first three months of learned were very rough.
I recall clearly stating in a thread on the old forum that I Hated Zorin OS.
About 4 months in for whatever reason, I decided to switch to Zorin Lite. Suddenly, my OS was under my control, everything worked better, was user friendly and settings and customization were easy.I continued using XFCE on Zorin lite for the rest of the first year learning Linux. That was around when I did the distro hopping, and tried out Mint 20. I disliked Cinnamon Desktop. But again, for reasons to do with making themes that were more complete for more desktops, I installed Cinnamon on Zorin Lite. As I learned how to really tweak and customize it, and with XFCE moving to CSD's and a gnome-clone style with 4.16, I switched over to just using Cinnamon. That is my year and 3/4 experience in a nutshell.
sudo apt remove gnome
Would get rid of Zorin Desktop and all other integrated portions. Guess how I learned.
sudo apt remove zorin-os-desktop
Might be the better way to go- with installation being the reverse of the removal.
If you like, you can
sudo apt install zorin-os-lite-desktop
on Core and then just log in to the Zorin lite D.E. instead of Gnome.
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Thanks @Aravisian for your responses. I didn’t got to try those commands. I did something after that wasn’t able to access the desktop. I had the tempting bootable drive ready in front of me. I couldn’t resist. Had all my data backed up.
So I just flashed Zorin OS Lite 15.3 on my system.
But may be if this issue occurs to someone else, they could try reinstalling the desktop.
Its good to have someone help diagnose the problem. Thanks for all your help.
Also thanks to @carmar.
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