matroxfb: set maxvram of vbG200eW to the same as vbG200 to avoid black screen

Started by Z. Liu on Dec 18, 2021 · 3 messages from 3 authors · Last reply Dec 20, 2021

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STALE1785d

open the first message on its own page

Message details and related content
Start from commit 11be60bd66d54 "matroxfb: add Matrox MGA-G200eW board
support", when maxvram is 0x800000, monitor become black w/ error message
said: "The current input timing is not supported by the monitor display.
Please change your input timing to 1920x1080@60Hz ...".

Fixes: 1be60bd66d54 ("matroxfb: add Matrox MGA-G200eW board support")
Cc: <redacted>
Cc: <redacted>
Signed-off-by: Z. Liu <redacted>
---
 drivers/video/fbdev/matrox/matroxfb_base.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/matrox/matroxfb_base.c b/drivers/video/fbdev/matrox/matroxfb_base.c
index 5c82611e93d9..236521b19daf 100644
--- a/drivers/video/fbdev/matrox/matroxfb_base.c
+++ b/drivers/video/fbdev/matrox/matroxfb_base.c
@@ -1377,7 +1377,7 @@ static struct video_board vbG200 = {
 	.lowlevel = &matrox_G100
 };
 static struct video_board vbG200eW = {
-	.maxvram = 0x800000,
+	.maxvram = 0x100000,
 	.maxdisplayable = 0x800000,
 	.accelID = FB_ACCEL_MATROX_MGAG200,
 	.lowlevel = &matrox_G100
-- 
2.32.0


Message details and related content
On 18.12.21 19:00, Z. Liu wrote:
quoted hunk
Start from commit 11be60bd66d54 "matroxfb: add Matrox MGA-G200eW board
support", when maxvram is 0x800000, monitor become black w/ error message
said: "The current input timing is not supported by the monitor display.
Please change your input timing to 1920x1080@60Hz ...".

Fixes: 1be60bd66d54 ("matroxfb: add Matrox MGA-G200eW board support")
Cc: <redacted>
Cc: <redacted>
Signed-off-by: Z. Liu <redacted>
---
 drivers/video/fbdev/matrox/matroxfb_base.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/matrox/matroxfb_base.c b/drivers/video/fbdev/matrox/matroxfb_base.c
index 5c82611e93d9..236521b19daf 100644
--- a/drivers/video/fbdev/matrox/matroxfb_base.c
+++ b/drivers/video/fbdev/matrox/matroxfb_base.c
@@ -1377,7 +1377,7 @@ static struct video_board vbG200 = {
 	.lowlevel = &matrox_G100
 };
 static struct video_board vbG200eW = {
-	.maxvram = 0x800000,
+	.maxvram = 0x100000,
 	.maxdisplayable = 0x800000,
 	.accelID = FB_ACCEL_MATROX_MGAG200,
 	.lowlevel = &matrox_G100
[TLDR: I'm adding this regression to regzbot, the Linux kernel
regression tracking bot; most text you find below is compiled from a few
templates paragraphs some of you might have seen already.]

Hi, this is your Linux kernel regression tracker speaking.

Thanks for the report.

Adding the regression mailing list to the list of recipients, as it
should be in the loop for all regressions, as explained here:
https://www.kernel.org/doc/html/latest/admin-guide/reporting-issues.html

To be sure this issue doesn't fall through the cracks unnoticed, I'm
adding it to regzbot, my Linux kernel regression tracking bot:

#regzbot ^introduced 11be60bd66d54
#regzbot title fbdev: matroxfb: display black ans warns "the current
input timing is not supported by the monitor display"
#regzbot ignore-activity
#regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215355

Reminder: when fixing the issue, please add a 'Link:' tag with the URL
to the report (the parent of this mail) using the kernel.org redirector,
as explained in 'Documentation/process/submitting-patches.rst'. Regzbot
then will automatically mark the regression as resolved once the fix
lands in the appropriate tree. For more details about regzbot see footer.

Sending this to everyone that got the initial report, to make all aware
of the tracking. I also hope that messages like this motivate people to
directly get at least the regression mailing list and ideally even
regzbot involved when dealing with regressions, as messages like this
wouldn't be needed then.

Don't worry, I'll send further messages wrt to this regression just to
the lists (with a tag in the subject so people can filter them away), as
long as they are intended just for regzbot. With a bit of luck no such
messages will be needed anyway.

Ciao, Thorsten (wearing his 'Linux kernel regression tracker' hat).

42 more lines

Message details and related content
CC Rich (author of commit in Fixes tag)

On Sun, Dec 19, 2021 at 11:31 PM Z. Liu [off-list ref] wrote:
quoted hunk
Start from commit 11be60bd66d54 "matroxfb: add Matrox MGA-G200eW board
support", when maxvram is 0x800000, monitor become black w/ error message
said: "The current input timing is not supported by the monitor display.
Please change your input timing to 1920x1080@60Hz ...".

Fixes: 1be60bd66d54 ("matroxfb: add Matrox MGA-G200eW board support")
Cc: <redacted>
Cc: <redacted>
Signed-off-by: Z. Liu <redacted>
---
 drivers/video/fbdev/matrox/matroxfb_base.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/matrox/matroxfb_base.c b/drivers/video/fbdev/matrox/matroxfb_base.c
index 5c82611e93d9..236521b19daf 100644
--- a/drivers/video/fbdev/matrox/matroxfb_base.c
+++ b/drivers/video/fbdev/matrox/matroxfb_base.c
@@ -1377,7 +1377,7 @@ static struct video_board vbG200 = {
        .lowlevel = &matrox_G100
 };
 static struct video_board vbG200eW = {
-       .maxvram = 0x800000,
+       .maxvram = 0x100000,
        .maxdisplayable = 0x800000,
        .accelID = FB_ACCEL_MATROX_MGAG200,
        .lowlevel = &matrox_G100
Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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