commit 48d04ec7bec1079f5025b00dd8cd9873f539af35
parent af7351e6c33e891344724968f88f3f62d0f3275c
Author: Kévin Le Gouguec <kevin.legouguec@gmail.com>
Date: Mon, 9 Nov 2020 13:34:47 +0100
Note down issues with kernel 5.8 on Dell laptop
Diffstat:
1 file changed, 30 insertions(+), 0 deletions(-)
diff --git a/guides/setups/operating-systems/debian.org b/guides/setups/operating-systems/debian.org
@@ -394,6 +394,36 @@ had left an error marker somewhere?]. Steps taken:
(which eventually just writes ~run_im none~ in =~/.xinputrc=).
3. Eventually, maybe I should just uninstall im-config.
+**** random lag
+***** DONE diagnosing
+Since… a few days? weeks? one month? everything randomly becomes
+"choppy":
+
+- typing (Emacs, Terminator, Firefox): I can type in a bunch of words,
+ sit back, wait a few seconds, then watch the words finally write
+ themselves letter by letter.
+- launching programs: ~while time $aprogram ; do sleep 0.5 ; done~,
+ where ~aprogram~ just starts then exits, shows wildly varying times.
+- scrolling a PDF with the touchpad (Evince): the pages stay stuck for
+ a few seconds, then the reader jumps to the new location; the mouse
+ pointer does change during this delay, as text and whitespace
+ (invisibly) scroll by.
+
+I can't remember changing anything recently, nor seeing any scary
+update passing by. journalctl, htop and dmesg do not show any obvious
+suspects. Some things I considered:
+
+- Disabling some services e.g. tor or speech-dispatcher ⇒ no effect.
+- Uninstalling xserver-xorg-video-intel ⇒ no effect.
+- Upgrading systemd from backports ⇒ no effect.
+- htop sometimes shows pulseaudio acting up despite no application
+ playing or recording sound?
+- Maybe I should try reinstalling Debian's stable kernel?
+ - Luckily 5.7 was not uninstalled when upgrading to 5.8; booting on
+ 5.7 solves all of the "choppiness" issues listed above.
+
+Now to pinpoint what's wrong with 5.8…
+***** TODO fixing
* Someday
** fix xfce4-terminal opening links with firefox-esr
** fix Thunar opening images with Firefox instead of Ristretto
