Hi,
On 2024/1/21 00:07, yetist wrote:
Without this patch, my server cannot start the DM. It is a Loongson
3C5000L server, with both a Loongson display controller and an ASPEED
graphics card.
$ lspci |grep VGA
0000:00:06.1 VGA Compatible Controller: Loongson Technology LLC DC
(Display Controller) (rev 01)
0000:03:00.0 VGA-compatible controller: ASPEED Technology, Inc.
ASPEED Graphics Family (revision 41)
When not working, there is the following information in dmesg:
loongson 0000:00:06.1: [drm] Private vram start: 0xe00472a6000,
size: 0MiB
Loongson 0000:00:06.1: [drm] *Error* Request (0MiB) failed
Anyway, this patch works fine with my server now, thank you.
Does the sever you are using has a dedicated VRAM for the 0000:00:06.1?
If not, the driver shouldn't be probed. This also means that the 0000:00:06.1
(Display Controller) shouldn't be detected by Linux kernel, because there is
no way for this driver can works correctly on such a case.
