Bug 826612

Please show the output of 'rpm -q grub2', and please make sure that you see the same problem after 'grub2-install /dev/sdX' and 'grub2-mkconfig -o /boot/grub2/grub.cfg'.

Does it make any difference which entries you are editing?

Hi there,

rpm -q grub2
gives grub2-2.0-0.25.beta4.fc17.x86_64

grub2-mkconfig did not really affect /boot/grub2/grub.cfg (I preserved the previous version, and then made a diff - all it did was to remove my Windows boot).

Obviously I did grub2-install as well.

I also tried to edit the grub.cfg so that to "shorten" the line where the editing fails - it did not help either...

I checked that the problem occurs on practically all entries that I have in my menu...

I will try to attach my grub.conf

Created attachment 587954 [details]
grub.cfg for which the problem persisits

Confirmed. Small problems in text mode, bigger and fatal problems in video mode.

It's fixed by following 2 commits together:
------------------------------------------------------------
revno: 4212
committer: Vladimir 'phcoder' Serbinenko <phcoder>
branch nick: grub
timestamp: Sat 2012-04-07 20:11:04 +0200
message:
        * grub-core/normal/charset.c (grub_ucs4_to_utf8): Return number of
        written bytes.
        (grub_get_num_of_utf8_bytes): New function.
        (grub_ucs4_to_utf8_alloc): Use grub_get_num_of_utf8_bytes.
        * grub-core/normal/menu_entry.c (run): Convert entry to UTF-8 before
        executing it.
        * include/grub/charset.h (grub_get_num_of_utf8_bytes): New proto.
        (grub_ucs4_to_utf8): Change return type.
------------------------------------------------------------
revno: 4184
committer: Vladimir 'phcoder' Serbinenko <phcoder>
branch nick: grub
timestamp: Tue 2012-03-27 17:07:26 +0200
message:
        Fix tab and wide character handling in editor and menu.
  
        * grub-core/normal/charset.c (grub_unicode_aglomerate_comb): Don't
        agglomerate control characters with combining marks.
        (bidi_line_wrap): Allow break on tab.
        (grub_unicode_get_comb_start): New function.
        * grub-core/normal/menu_entry.c: Restructure to handle wide characters
        and tab correctly.
        * grub-core/normal/menu_text.c (print_entry): Replace \n, \r, \b and \e
        with a space.
        * grub-core/normal/term.c (print_ucs4_terminal): New argument
        fixed_tab_size. All users updated.
        * include/grub/term.h (GRUB_TERM_TAB_WIDTH): New const.
        (grub_term_getcharwidth): Handle \t.
        * include/grub/unicode.h (grub_unicode_glyph_dup): Fix allocation
        and copy.

These patches are included in the unofficial beta6 scratch build on http://koji.fedoraproject.org/koji/taskinfo?taskID=4121699

Please give it a try and see if it solves your problem.
Install grub2 and grub2-tools rpms,
grub2-install /dev/sda
grub2-mkconfig -o /boot/grub2/grub.cfg

It does not help - sorry...
I tried the x86_64 taken from the x86_64 subtask ie.
http://koji.fedoraproject.org/koji/taskinfo?taskID=4121701

the symptoms are still the same.

I tried with the config file that was freshly generated by grub2-mkconfig as well as with my manually-edited /boot/grub2/grub.cfg , and the config file that I originally submitted as the attachment 587954 [details] .

Please, let me know if you had something new to test. I will try to check the new version once it is available...

kind regards,
 Piotr

Following 4 commits should help:

revno: 4410
committer: Vladimir 'phcoder' Serbinenko <phcoder>
branch nick: grub
timestamp: Sat 2012-06-02 14:46:22 +0200
message:
        * grub-core/normal/menu_entry.c (print_line): Fix off-by-one error which
        resulted in \\ at the end of the line.
------------------------------------------------------------
revno: 4409
committer: Vladimir 'phcoder' Serbinenko <phcoder>
branch nick: grub
timestamp: Sat 2012-06-02 14:39:35 +0200
message:
        * grub-core/kern/parser.c (grub_parser_state_transitions): Handle \t.
        (grub_parser_cmdline_state): Likewise.
        (grub_parser_split_cmdline): Likewise.

revno: 4407
committer: Vladimir 'phcoder' Serbinenko <phcoder>
branch nick: grub
timestamp: Sat 2012-06-02 14:30:52 +0200
message:
        * grub-core/normal/menu_entry.c (update_screen): Fix loop condition to
        fix partially stale display.
------------------------------------------------------------
revno: 4406
committer: Vladimir 'phcoder' Serbinenko <phcoder>
branch nick: grub
timestamp: Sat 2012-06-02 14:28:12 +0200
message:
        * grub-core/normal/menu_entry.c (backward_char): Use right line for
        substraction.

This fix can be tested with an unofficial scratch build with a snapshot from bzr: grub2-2.0-0.37.beta6.4462.fc17 at http://koji.fedoraproject.org/koji/taskinfo?taskID=4152623 - please test and report back.

Created attachment 611593 [details]
screenshot showing typed characters one line above cursor

This bug still occurs with:
grub2-2.0-0.38.beta6.fc17.x86_64

The attached screenshot shows an example.

Procedure:
1. In a VM, do a clean install from the F17 DVD image.
2. After rebooting and configuring, run:
   yum update grub2
   grub2-install /dev/sda
   grub2-mkconfig -o /boot/grub2/grub.cfg
3. Reboot and at the grub menu press "e".
4. Use the down-arrow to go to the line beginning "linux ..."
5. Type "xxx".
   The characters "xxx" are displayed one line above the line with the cursor.

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