path: root/wiki/src
diff options
authorsajolida <>2019-05-14 16:10:38 +0000
committerCody Brownstein <>2019-05-15 14:58:05 -0700
commit2d269a539d57ed9e36ae71b5b5712254f91408c7 (patch)
tree51ca889314814e5bec559ae876395e368cb2dcbf /wiki/src
parent3a94a9cc6f586db17c38fa22a84119d38a670730 (diff)
Improve the 'soft lockup' issue
- Move to known_issues/graphics because it's about the screen brightness and not about first boot stages. - Name it according to its generic symptom because it affects several computer models.
Diffstat (limited to 'wiki/src')
2 files changed, 13 insertions, 6 deletions
diff --git a/wiki/src/support/known_issues.mdwn b/wiki/src/support/known_issues.mdwn
index 67d9b9a..2b3091d 100644
--- a/wiki/src/support/known_issues.mdwn
+++ b/wiki/src/support/known_issues.mdwn
@@ -159,12 +159,6 @@ and it will continue with the boot.
This problem might be corrected in Tails 1.1 and newer: please report
your test results back to us.
-### Dell XPS 15 9560
-To make Tails start successfully, add `acpi_rev_override=1
-nouveau.modeset=0` to the [[startup
### Dell XPS L702X/03RG89, Samsung RV520, Samsung Series 7 Chronos
Does not start on USB sticks.
diff --git a/wiki/src/support/known_issues/graphics.mdwn b/wiki/src/support/known_issues/graphics.mdwn
index 10b71c7..c53f7e0 100644
--- a/wiki/src/support/known_issues/graphics.mdwn
+++ b/wiki/src/support/known_issues/graphics.mdwn
@@ -294,6 +294,19 @@ We need more test results from users: [[!tails_ticket 15116]]
Other issues
+Black screen and "soft lockup" error
+On some laptops, Tails starts but displays the following error and ends
+up on a black screen:
+<p class="pre">soft lockup - CPU#<span class="command-placeholder">N</span> stuck for <span class="command-placeholder">N</span>s</p>
+To make Tails start successfully, add the following options to the
+[[startup options|/doc/first_steps/startup_options/#boot_loader_menu]]:
+ acpi_rev_override=1 nouveau.modeset=0
<a id="sg-black-screen"></a>
Black screen with switchable graphics computers