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I have an old Gateway NE71B with AMD Dual-Core Processor E1-1200 running Xubuntu 18.04. It has gotten quite slow even when entering text into a browser search bar. I was using chromium and the browser would raise CPU usage up near 100%. Firefox does the same. I downloaded Midori and it also seems to drive cpu usage at times up to 100%. Is there some way to get it to work. I did notice that when I upgraded to Ubuntu 18.04 the system got really slow but the change to Xubuntu was enough to get it working OK so it is probably a borderline situation. Maybe updates have pushed it too far. If there is not a fix woul;d another flavor of Linux help?

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    FYI: Xubuntu 18.04 LTS is no longer supported; refer xubuntu.org/release/18-04 or fridge.ubuntu.com/2020/08/14/ubuntu-18-04-5-lts-released where you'll note only Ubuntu Server, Ubuntu Desktop & Ubuntu Cloud come with 5 years of support; flavors only had shorter lives. I'd suggest using ubuntu-support-status to assess the security status of your actual install. Your question is still on-topic here, but consider how much security matters to you and the results of prior command. You're now using Ubuntu 18.04 LTS with Xfce (not Xubuntu).
    – guiverc
    Nov 10, 2021 at 3:24
  • As to your actual question; I still use devices with 1GB of RAM which is really small these days. Those boxes have both LXDE (Lubuntu in 18.04), XFCE (Xubuntu in 18.04) & more installed - but which I use will depend on what I'll do for the day; as I try and minimize the RAM used by selecting the DE I login with by what I'll do in the session. LXDE is GTK2 so is best with GTK2 apps; Xfce in 18.04 was part GTK2 & part GTK3 so loses out on GTK2 apps, but catches up to the lighter LXDE with GTK3 apps.. I consider the libs/toolkits used by apps I'll use, with the desktop I'll use that session.
    – guiverc
    Nov 10, 2021 at 3:27
  • Having multiple DEs installed complicates menu, disk space used, & increases my updates (more packages to updates), but on old resource limited boxes - it's the RAM I worry about most as that's what is most limiting (esp. with 1 or 1.5 GB only). The disk space used by having LXDE/Xfce/MATE/etc installed to disk is not an issue to me (nor the added menu complexity, bandwidth esp. given they're now EOL... MATE is fully GTK3 in 18.04 having been so for many releaes etc).
    – guiverc
    Nov 10, 2021 at 3:30
  • Have you used browser's task manager to actually check what makes the CPU load?
    – jarno
    Nov 10, 2021 at 4:36
  • Your title talks about Lubuntu but the other text about Xubuntu. Which one are you using?
    – jarno
    Nov 10, 2021 at 4:42

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