This bug was fixed in the package linux-riscv - 5.11.0-1007.7
---------------
linux-riscv (5.11.0-1007.7) hirsute; urgency=medium
[ Ubuntu: 5.11.0-16.17 ]
* hirsute beta desktop AMD64 ISO kernel panic on boot when booting using UEFI
(LP: #1922403)
- SAUCE: efifb: Check efifb_pci_dev before using it
-- Seth Forshee <seth.fors...@canonical.com> Wed, 14 Apr 2021 14:53:29
-0500
** Changed in: linux-riscv (Ubuntu)
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/1923084
Title:
duplicate consoles on riscv64
Status in linux-riscv package in Ubuntu:
Fix Released
Bug description:
When booting on SiFive boards, there are two gettys launched on the
same console.
There is sifive serial console which is the active/only physical
console.
But also, there is serial console exposed over legacy opensbi
extension; which in linux kernel is implemented as hvc0 console, which
systemd starts getty for.
The issue is that the both consoles are actually the same one.
Thus some other distros chose to hard-code disable hvc0 console on
riscv64.
But given that the legacy sbi serial console extension will eventually
go away, it makes sense to disable that in the kernel out right.
By setting:
+# CONFIG_RISCV_SBI_V01 is not set
+# CONFIG_SERIAL_EARLYCON_RISCV_SBI is not set
+# CONFIG_HVC_RISCV_SBI is not set
This way sifive0 console will be discovered and used automatically;
ditto earlyprintk without needing to specify sbi or explicitely set
sifive0 console.
This will also improve UX experience with just a single getty on the
serial connection.
Before the patch is applied:
# ls /run/systemd/generator/getty.target.wants/
serial-getty@hvc0.service serial-getty@ttySIF0.service
After the patch is applied:
$ sudo ls /run/systemd/generator/getty.target.wants/
serial-getty@ttySIF0.service
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