GNU GRUB - Bugs: bug #43604, lack of flow control on serial port
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bug #43604: lack of flow control on serial port
Submitter: | Peter <peetz0r> | ||
Submitted: | Thu 13 Nov 2014 09:35:59 PM UTC | ||
Category: | Terminal | Severity: | Major |
Priority: | 5 - Normal | Item Group: | Feature Request |
Status: | None | Privacy: | Public |
Assigned to: | arvidjaar | Originator Name: | |
Open/Closed: | Open | Release: | other |
Release: | Reproducibility: | Every Time | |
Planned Release: | 2.03+ |
Sat 14 Feb 2015 05:59:04 PM UTC, comment #5: |
Andrei Borzenkov <arvidjaar> |
Wed 10 Dec 2014 07:23:59 PM UTC, comment #4: Ah, grub uses RTS/CTS flow control, but the VT510 uses DTR/DSR.
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Peter <peetz0r> |
Wed 10 Dec 2014 06:05:37 PM UTC, comment #3: Actually on x86 hardware flow control should be enabled by default. Did you enable it on terminal? |
Andrei Borzenkov <arvidjaar> |
Wed 10 Dec 2014 12:04:39 AM UTC, comment #2: So the option does exist after all? But it is not mentioned on http://www.gnu.org/software/grub/manual/grub.html#serial which is wat led me to believe that it didn't.
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Peter <peetz0r> |
Tue 09 Dec 2014 07:02:44 PM UTC, comment #1: serial has --rtscts=on|off option to enable hardware flow control but there was an error, so this option did not work. I pushed fix, do you have possibility to test current GIT? Alternatively I attach patch to serial.c that fixes option processing. |
Andrei Borzenkov <arvidjaar> |
Thu 13 Nov 2014 09:35:59 PM UTC, original submission:
Version: 2.02~beta2-9ubuntu1
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Peter <peetz0r> |
Depends on the following items: None found
Items that depend on this one: None found
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Follow 8 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2016-03-02 | phcoder | Planned Release | None | 2.03+ | |
2015-02-14 | arvidjaar | Status | Need Info | None | |
Open/Closed | Accepted | Open | |||
2014-12-09 | arvidjaar | Attached File | - | Added serial.patch, #32626 | |
Status | None | Need Info | |||
Assigned to | None | arvidjaar | |||
Open/Closed | Open | Accepted | |||
2014-11-13 | peetz0r | Attached File | - | Added grub-sk1llz-ascii-art-serial-config.txt, #32430 |
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Corresponding source code
Sorry for delayed response. I was wrong. The option sets some UART configuration bits, so in any case it is up to used UART to actually implement them. To my knowledge not many do it.
So we are back to lack of proper software implementation of flow control in grub2.