On Sat, 2018-05-12 at 05:36 +0200, Cyril Brulebois wrote: > Package: debian-installer > Severity: serious > Justification: graphical installer regression > > Hi, > > Ever since we switched from linux 4.15 to 4.16, the graphical installer > gets a black screen. Comparing Xorg logs, everything is exactly the same > except for the kernel version and timestamps. syslog has extra lines > about random stuff: [...]
This sounds similar to the regression seen in stable affecting gnome-
session. libICE has a function for generating the MIT-MAGIC-COOKIE-1
cookie, which now uses libbsd's arc4random_buf() which now uses
getrandom(). getrandom() is documented to block (by default) when not
much entropy is available, but until recently it could return too early
after boot.
I don't know whether the cookie is generated this way when d-i starts
the X server.
I opened bug #898088 against libbsd because arc4random_buf() is
documented to return "very quickly".
Ben.
--
Ben Hutchings
The most exhausting thing in life is being insincere.
- Anne Morrow Lindberg
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