I'm new on ubuntu and I'm having problems of fluidity. I've installed the latest version, 11.10 in 64 bits mode and my issue is that when booting normally, mouse and screen in general jump every five seconds or so, a bit nasty. But if i launch ubuntu from recovery mode, it goes perfect and smooth.   Is there anyway of solving this or is just accept and choose recovery mode at every launch?  Thanks.
25392
I've just installed Ubuntu and I need either video, wireless, or some sort of other manufacturer (non-opensource) driver. How can I run the tool that will fetch all of these for me? I'd like graphical instructions.  Related:
87598
Ubuntu 16.04 has been hanging on me ~1x per day.  This happens when I am in the middle of web browsing or using a desktop application, not when booting.  When it does, the mouse pointer will still move freely, but clicking or keystrokes have no effect on my system until I do a hard reboot.  What is the best way for me to debug this?  Here is some information:  selah@selah-Precision-Tower-5810:~$ uname -a Linux selah-Precision-Tower-5810 4.4.0-59-generic #80-Ubuntu SMP Fri Jan 6 17:47:47 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux   Also, in case it is relevant, I have a "very big" monitor, a Dell 42" at 3840x2160 resolution.  selah@selah-Precision-Tower-5810:~$ lspci | grep VGA 03:00.0 VGA compatible controller: NVIDIA Corporation GM107GL [Quadro K2200] (rev a2)     UPDATE:  Following Artyom's advice I found the following message in my error logs:   Apr 27 09:47:25 selah-Precision-Tower-5810 kernel: nouveau 0000:03:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT] Apr 27 09:47:29 selah-Precision-Tower-5810 kernel: nouveau 0000:03:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT] Apr 27 09:47:33 selah-Precision-Tower-5810 kernel: nouveau 0000:03:00.0: fifo: SCHED_ERROR 0a [CTXSW_TIMEOUT]   Which has let me to this bug which describes similar behavior:
87334
My ubuntu boot screen shows up in a strange low resolution, almost text mode, instead the usual and sleek white "ubuntu" over dark background. It's not a big issue because when GDM loads everything becomes ok, but If there's an easy way to fix it I would like to give it a try.
87264
I am using Ubuntu 16.04 with GTX 1080. On my first boot, the screen turn black after I selected Ubuntu in grub. After I added nomodeset, the black screen gone however it only shows the Ubuntu default background image. It can't reach the login screen.
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How can I reinstall Ubuntu 13.04 safely, without losing anything except settings? Is it possible? Or at least keep only programs and the home directory?  I want to reinstall as I have recently experienced various issues like the scrolling being very jumpy and lightdm rendering weirdly. Can someone more experienced explain how to reinstall Ubuntu as I have been searching in vain for days. Thanks in advance.
57855
I've been using Ubuntu(12.10) for a long time, and recently, my Ubuntu went through yet another update.  The whole update prompt showed up, following by a password prompt, and finally the good ol' progress bar...  Everything went well, and later on, I shut down my computer.  The next day, I turned my PC on, went to the login screen. I went ahead, and logged in, but after that, all I could see was a black screen, and my cursor!  I checked the forums, and got various tips, none of which worked...  Now I'm stuck with an Ubuntu installation that's completely useless.  One more thing:  I even tried logging in through Guest, but same problem! :\  My Computer Specs: Motherboard: Intel DG41WV Processor: Intel Core 2 Quad Q6600 @ 2.40GHz Graphics: Intel G41 Express Chipset RAM: Dual Channel, DDR3 2*2GB (4096 MBytes) HDD: Seagate 500GB SATA   ---- DETAILED INFO ----  To be a little more precise about my problem, after I log in, I can see a black screen and my cursor. Plus, importantly, I was able to see a login screen, hence I'm sure Ubuntu is rendering properly, and also pretty sure that there's no problem with the drivers (Otherwise I shouldn't even get a login screen, right?).  Anywho, another (probably) important thing is that, after logging in, I can hit Ctrl+Alt+1 and get up a recovery console.  The only thing that doesn't load is my actual GUI desktop  Then, I ran unity from the recovery console, it went through a few commands, got stuck at OpenGL for a few seconds, then zoomed throught many more lines of code, and ended up with this:  ERROR 2012-01-03 20.51.23 unity.launcher.Icon TrashLauncherIcon.cpp:62 Could not create file monitor for trash url: Operation not supported  *** glibc detected *** compiz: malloc(): memory corruption: 0x09c861d6 ***   After that. back at Ctrl+Alt+F7: Desktop Background + Cursor  So back to the terminal again, I had to hit Ctrl+C to get back again.  now, I typed unity again, and this was the output:  WARNING: no DISPLAY variable set, setting it to :D compiz (core) - Info: Loading plugin: core compiz (core) - Info: Starting plugin: core unity-panel-service: no process found   so now I did a sudo service lightdm restart :  X10: fatal IO error 4 (Interrupted system call) on X server ":0" after 131 requests (130 known processed) with 0 events remaining. lightdm stop/waiting lightdm start/running, process 2852   Im back at the login screen, and I login again, now Im back to black screen (Yes, I lost the Desktop Background as well)  So, once again, I try unity (same response as last time):  WARNING: no DISPLAY variable set, setting it to :D compiz (core) - Info: Loading plugin: core compiz (core) - Info: Starting plugin: core unity-panel-service: no process found   And still a black screen! :\
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I have a , with Ubuntu 16.04 installed.  I have recently (today) updated it(not upgraded), and afterwards it asked for a reboot, so I did that. However, after reboot it showed the login screen and mentioned connection established (for internet through Ethernet), and login password cursor was blinking during that time but after that even the cursor stopped blinking and accepting no response from keyboard or mouse. Only one option is to force shutdown. I have no idea what part of the update resulted in this.   Everything was working fine before the update. Once the Ethernet icon announcing connection has been established goes away, it takes away the blinking of the cursor, then keyboard and mouse simply won't work. I even tried connecting keyboard on other slots, but no success. Can I uninstall the last update?  NOTE:  I heard a sound from the processor when login screen comes and in between the cursor also blinks, but once this sound is over then the blinking freezes and you have to forcibly shutdown, as this is an institute computer (I took the admin privilege, headache). Now I am  really worried about it. How to fix it?  IMPROVEMENT  I did not have to go for a live USB, and I was able to go to grub I was able to go to the GRUB menu by pressing the Esc key). This what I got.      I have no idea how to go about it after that. It is saying Secure boot forbids loading module, while loading Ubuntu I did secure boot by entering a password for that.
102622
IMPORTANT: Ubuntu Classic (without effects) works. I am trying to get unity to work.  Have the following problem with Ubuntu 11.04 (had it with 10.10 too, but disabling KMS or using the fglrx driver fixed it - cant remember exactly which). But now since the radeon driver is better than it used to i want to use it + fglrx performance kinda sucks.   So, ubuntu boots normaly until the login screen. After login it shows the background, the mouse is shown and it just remains there, it does not load the anything else. It does not freeze. I can move the mouse and can go into text console(ctrl+alt+f1).   It does not work on Ubuntu profile (Unity) or on the Ubuntu Classic (gnome + effects) profile. I even tried installing Gnome3 from their ppa, but it does not finish loading either (just like the other two).  Now my hardware : notebook Toshiba Satellite M40, Ati Radeon x600 (128mb) video card.  I haven't been able to find any errors in dmesg or other logs.  Update1:  Alt+F2 does not work. Nothing pops up. There is a gnome panel loaded (I see the process in the text console) when trying Ubuntu classic (with effects). Even the unity panel service loads when I use the Ubuntu profile. I get the impression that something doesn't finish loading (in both Ubuntu and classic with effects) because if I move the mouse over to where the toolbar would be I get the working mouse.  The thing is with fglrx I get an error when trying to load unity, saying to use classic because of lack of hardware. But with the radeon driver I don't get that error, they seem to start loading but never end. They just hang.  It would be nice if radeon driver would allow me to use effects/unity/gnome3 since unity seems to run ok on an intel 945m Express integrated video card notebook. Hope updates to the driver/unity will fix my problem.  $ /usr/lib/nux/unity_support_test -p  OpenGL vendor string: X.Org R300 Project OpenGL renderer string: Gallium 0.4 on ATI RV380 OpenGL version string: 2.1 Mesa 7.10.2 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity supported: yes   Since the unity script says that I should be running unity I am leaving this question open.  Found lots of bugs related to this (i think) like  and  and lots of questions relating to it on this very site / other sites. So I will assume that this is a problem that will be resolved in ulterior Ubuntu updates.   Update 2 :  Fiddling with compiz plugins (Gnome Plugin or Unity Plugin) in CCSM does not do the trick either.  The same goes for unistalling compiz/unity and reinstalling it.  Am starting to get the feeling that this is not a thing easy to fix, and only a driver (radeon/r300g/Gallium) / compiz / unity Ubuntu update will fix this. Will probably close question soon .  Feel free to leave your opionions / fixes here and i will try them and answer.  Any ideeas? I am willing to try everything to get it to work.
97959
I think I messed up my Ubuntu 12.04. I really just want the 'dodge over window' feature that's why I followed the steps here:    And now I have unity version 5.18  But every time I log in, I'm just getting a screen with my wallpaper and a mouse.   I enabled 'unity plugin' in ccsm, but didn't work.  I tried to uninstall unity and did these:   sudo apt-get install ppa-purge  sudo ppa-purge ppa:ikarosdev/unity-revamped  sudo apt-get update  sudo apt-get install unity   but still getting version 5.18. Now I'm thinking the best solution (I think?) is to completely remove unity and all it's components to get version 5.10.  Or if you have a different solution just for me to get back my desktop would be great. Thanks for reading.
1858
The latest updates (4/1/2018) make my laptop constantly crash the GUI/Unity:  (Intel Pentium su4100 processor)  syslog:  Jan  5 11:38:53 1810 kernel: [ 1850.327738] compiz[11911]: segfault at 0 ip 00007f6c7baf0c16 sp 00007ffd5ec71c60 error 4 in i965_dri.so[7f6c7b513000+82d000]   After login I end up with an empty desktop, just a wallpaper, GUI/Unity are in a crash loop:   No panel.  No dash.  Can't start a program. Launcher disappears. Sidebar disappears. System crash. Windows key not working. The key combination Alt+Tab not working.   Simply, the computer is not usable. Same for guest login. The only thing working: open up a terminal CTRL+ALT+T to examine log files.  I somehow forced  to let me log in and file the bug, but still lots of problems:   Dash not working Alt+Tab not working Sometimes windows all disappear for a few seconds     Any ideas for a solution or workaround?   UPDATE     If you have the same/ very similar problems, follow the link to my    report and mark there that you're affected too. Or file your own. Please leave a comment   if you wish, or upvote - this is a nasty problem - but an answer should   offer a fix or a workaround so users can use their computer again.    Without , Ubuntu can't fix issues.
20890
My relatively fresh Ubuntu 19.10 on a top notebook is running flawlessly, but some applications are really slow to start. For now it's keepassX, filezilla, deadbeef. Both takes about 30 seconds to show it's window, but after that both are blazing fast as others. May be someone can help me to find a solution?
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I was not aware of booting mode and installed ubuntu on my new x64,4 gb ram, Acer ES15 laptop in legacy mode. I read about the feature of uefi mode and would like to switch to uefi. When I boot on legacy mode, ubuntu loads up and system works fine, but when I change my bios setting to uefi it says no bootable device found. Should I install ubuntu again using uefi mode after erasing data? Will that work?.... Is there any other way to get to uefi mode or I need to format and then install ubuntu again using uefi bios mode? Please, help.
72091
Yesterday (Jan. 3, 2018), I installed an OS update (Ubuntu 16.04), using the Software Center. My system isn't working correctly now. When my mouse rolls over the Launch bar, it disappears, then any open window disappears, leaving me with only the desktop screensaver showing. I can't even shut the computer off using the settings button on the top.  I went into the Terminal and attempted to fix it using the following commands:  sudo apt-get dist-upgrade sudo apt-get autoremove   But I'm still having the same problem.  I have reinstalled Ubuntu 16.04 and when I accepted the update on install had the same problem.  I have reinstalled it a second time but have not done an OS update and everything seems to be working fine.    Found another user with the same problem:    Is it possible that the Meltdown security update is at fault?  I've read the update has been issued for 64-bit x86 architecture ();  I'm running a 32 bit i386 architecture.  Could that be an issue and is there a way to correct it?
76829
Lately, booting Ubuntu on my desktop has become seriously slow. We're talking two minutes. It used to take 10-20 seconds. Because of plymouth, I can't see what's going on. I would like to deactivate it, but not really uninstall it. What's the quickest way to do that? I'm using Precise, but I suspect a solution for 11.10 would work just as well.
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After upgrade to 15.04 my ubuntu loads really slowly, slower than Windows 8 on the same machine, which insults me.  I turned off splash screen, and when I boot the system I get this:  A start job is running for dev-hdb2.device   and It stays that way for 1:30 minute, with a time counter next to it set exactly to 1:30.   Also when I reboot I get this message:  A stop job is running for Session c2 of user MrMino   same here - it stays that way for 1:30  Output of dmesg:   Unfortunately bootchart isn't working for some reason not known to me now, so I can't post logs from it.  How to make this go away? I'm running ubuntu on Dell Inspiron 3537.
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I use Ubuntu 18.04.  When i boot up the system and login screen shows up, it loads some settings that i don't like and would like to change them.Namely   keyboard layout mouse sensitivity screen resolution   However at the login screen i don't have any option to change settings. And as soon as i login to an account, i can only change settings for that account and the login screen remains unchanged.  Obviously the settings has to be loaded from somwhere. Is there some hidden user that stores these settings? Or is it stored under root? Or any other special configuration file?  I tried to google this problem, but such question does not appear anywhere.  So can you please help me to change those settings for the login screen?
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I installed the latest updates from the software update center today (I update when ubuntu displays a notification), restarted the machine and now it's unable to boot properly. The best screen I can get is displayed below. If I resize the screen then it goes to black. If I restart the machine then it displays just purple.    Note that the screen is unresponsive, I can't click anything on it.  Other than SMBus Host Controller not enabled! I don't see any other warnings. Note that I don't know if this warning existed before the update.  I'm running ubuntu 18.04 in vwmare workstation 15 player (latest update). Any ideas on how to begin debugging this?    Update: Trying to boot Ubuntu, with Linux 4.15.0-50-generic instead of Ubuntu, with Linux 4.15.0-51-generic didn't help.  Update: Blacklisting i2c-piix4 according to  answer didn't remove the warning or fix the issue.  Update: Blacklisting i2c-piix4 according to  answer removed the warning but didn't fix the issue.  Update: The answer from Uzair helped me log into the account (run dpkg and update grub from recovery mode).  Answer:  answer helped me fully to resolve the issue. I don't understand the fix. If anyone does, put it as the answer and I'll mark it as such.  Regarding duplicity: The answer from another question did solve my issue but I don't think my question is a duplicate of that one. I began with a fresh install of 18.04 a few months ago, did several updates without an issue and only today experienced issues which are different than those described in the other question. I think we experienced different bugs with wayland and we both solved it by disabling it which is a destructive solution applicable to many questions.