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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi Am 18.09.25 um 04:04 schrieb Nick Bowler: > On Wed, Sep 17, 2025 at 11:14:45AM -0400, Nick Bowler wrote: >> On Fri, Aug 29, 2025 at 03:07:14PM +0200, Thomas Zimmermann wrote: >>> The ast driver doesn't do much during shutdown. Could you please out-comment >>> the lines at either [2] xor [3] and report on either effect? These calls >>> turn of the video chip's memory access and sync pulses. Not doing that might >>> resolve the problem. >>> >>> [2] https://elixir.bootlin.com/linux/v6.16.3/source/drivers/gpu/drm/ast/ast_mode.c#L835 >>> [3] https://elixir.bootlin.com/linux/v6.16.3/source/drivers/gpu/drm/ast/ast_mode.c#L839 >> I can try this. > OK, I tested 6.17-rc6 and reproduced the problem on this version. Then: > > - Deleting [2] (only) appears to make no difference whatsoever. That > is, deleting the following line in ast_mode.c: > > ast_set_index_reg_mask(ast, AST_IO_VGASRI, 0x01, 0xdf, AST_IO_VGASR1_SD); > > - Deleting [3] (only) appears sufficient to make things work again, > that is, deleting the following line in ast_mode.c: > > ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xb6, 0xfc, vgacrb6); Please test if the attached patch fixes the problem for you. Best regards Thomas > > Thanks, > Nick -- -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstrasse 146, 90461 Nuernberg, Germany GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman HRB 36809 (AG Nuernberg) --------------vupL6B6jOl0dl79XEW8C83jg Content-Type: text/x-patch; charset=UTF-8; name="0001-ast-Use-VGACR17-sync-enable.patch" Content-Disposition: attachment; filename="0001-ast-Use-VGACR17-sync-enable.patch" Content-Transfer-Encoding: base64 RnJvbSA1MWViYjU3M2EwOTA0OTRkZTc5Y2JiNzFlOWIyOTI1NWUxMzY0ZTFjIE1vbiBTZXAg MTcgMDA6MDA6MDAgMjAwMQpGcm9tOiBUaG9tYXMgWmltbWVybWFubiA8dHppbW1lcm1hbm5A c3VzZS5kZT4KRGF0ZTogVGh1LCAxOCBTZXAgMjAyNSAwOTo1MDoyOCArMDIwMApTdWJqZWN0 OiBbUEFUQ0hdIGFzdDogVXNlIFZHQUNSMTcgc3luYyBlbmFibGUKCkJsYW5rIHRoZSBkaXNw bGF5IGJ5IGRpc2FibGluZyBzeW5jIHB1bHNlcyB3aXRoIFZHQUNSMTc8Nz4uIFNvbWUKQk1D J3MgZG9uJ3QgaGFuZGxlIFZHQUNSQjYgY29ycmVjdGx5LiBBbmQgZG9uJ3QgbW9kaWZ5IFZH QVNSMSdzIFNECmJpdCwgd2hpY2ggb25seSBkaXNhYmxlcyBHUFUgYWNjZXNzIHRvIFZSQU0u Ci0tLQogZHJpdmVycy9ncHUvZHJtL2FzdC9hc3RfbW9kZS5jIHwgMTQgKysrKysrLS0tLS0t LS0KIGRyaXZlcnMvZ3B1L2RybS9hc3QvYXN0X3JlZy5oICB8ICAxICsKIDIgZmlsZXMgY2hh bmdlZCwgNyBpbnNlcnRpb25zKCspLCA4IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2Ry aXZlcnMvZ3B1L2RybS9hc3QvYXN0X21vZGUuYyBiL2RyaXZlcnMvZ3B1L2RybS9hc3QvYXN0 X21vZGUuYwppbmRleCBiNGU4ZWRjN2M3NjcuLjBkZjA2ZGU5YjY0NCAxMDA2NDQKLS0tIGEv ZHJpdmVycy9ncHUvZHJtL2FzdC9hc3RfbW9kZS5jCisrKyBiL2RyaXZlcnMvZ3B1L2RybS9h c3QvYXN0X21vZGUuYwpAQCAtODM2LDIyICs4MzYsMjAgQEAgYXN0X2NydGNfaGVscGVyX2F0 b21pY19mbHVzaChzdHJ1Y3QgZHJtX2NydGMgKmNydGMsCiBzdGF0aWMgdm9pZCBhc3RfY3J0 Y19oZWxwZXJfYXRvbWljX2VuYWJsZShzdHJ1Y3QgZHJtX2NydGMgKmNydGMsIHN0cnVjdCBk cm1fYXRvbWljX3N0YXRlICpzdGF0ZSkKIHsKIAlzdHJ1Y3QgYXN0X2RldmljZSAqYXN0ID0g dG9fYXN0X2RldmljZShjcnRjLT5kZXYpOworCXU4IHZnYWNyMTcgPSAweDAwOwogCi0JYXN0 X3NldF9pbmRleF9yZWdfbWFzayhhc3QsIEFTVF9JT19WR0FDUkksIDB4YjYsIDB4ZmMsIDB4 MDApOwotCWFzdF9zZXRfaW5kZXhfcmVnX21hc2soYXN0LCBBU1RfSU9fVkdBU1JJLCAweDAx LCAweGRmLCAweDAwKTsKKwl2Z2FjcjE3IHw9IEFTVF9JT19WR0FDUjE3X1NZTkNfRU5BQkxF OworCWFzdF9zZXRfaW5kZXhfcmVnX21hc2soYXN0LCBBU1RfSU9fVkdBQ1JJLCAweDE3LCAw eDdmLCB2Z2FjcjE3KTsKIH0KIAogc3RhdGljIHZvaWQgYXN0X2NydGNfaGVscGVyX2F0b21p Y19kaXNhYmxlKHN0cnVjdCBkcm1fY3J0YyAqY3J0Yywgc3RydWN0IGRybV9hdG9taWNfc3Rh dGUgKnN0YXRlKQogewogCXN0cnVjdCBkcm1fY3J0Y19zdGF0ZSAqb2xkX2NydGNfc3RhdGUg PSBkcm1fYXRvbWljX2dldF9vbGRfY3J0Y19zdGF0ZShzdGF0ZSwgY3J0Yyk7CiAJc3RydWN0 IGFzdF9kZXZpY2UgKmFzdCA9IHRvX2FzdF9kZXZpY2UoY3J0Yy0+ZGV2KTsKLQl1OCB2Z2Fj cmI2OworCXU4IHZnYWNyMTcgPSAweGZmOwogCi0JYXN0X3NldF9pbmRleF9yZWdfbWFzayhh c3QsIEFTVF9JT19WR0FTUkksIDB4MDEsIDB4ZGYsIEFTVF9JT19WR0FTUjFfU0QpOwotCi0J dmdhY3JiNiA9IEFTVF9JT19WR0FDUkI2X1ZTWU5DX09GRiB8Ci0JCSAgQVNUX0lPX1ZHQUNS QjZfSFNZTkNfT0ZGOwotCWFzdF9zZXRfaW5kZXhfcmVnX21hc2soYXN0LCBBU1RfSU9fVkdB Q1JJLCAweGI2LCAweGZjLCB2Z2FjcmI2KTsKKwl2Z2FjcjE3ICY9IH5BU1RfSU9fVkdBQ1Ix N19TWU5DX0VOQUJMRTsKKwlhc3Rfc2V0X2luZGV4X3JlZ19tYXNrKGFzdCwgQVNUX0lPX1ZH QUNSSSwgMHgxNywgMHg3ZiwgdmdhY3IxNyk7CiAKIAkvKgogCSAqIEhXIGN1cnNvcnMgcmVx dWlyZSB0aGUgdW5kZXJseWluZyBwcmltYXJ5IHBsYW5lIGFuZCBDUlRDIHRvCmRpZmYgLS1n aXQgYS9kcml2ZXJzL2dwdS9kcm0vYXN0L2FzdF9yZWcuaCBiL2RyaXZlcnMvZ3B1L2RybS9h c3QvYXN0X3JlZy5oCmluZGV4IGUxNWFkYWYzYTgwZS4uMzA1NzhlM2IwN2U0IDEwMDY0NAot LS0gYS9kcml2ZXJzL2dwdS9kcm0vYXN0L2FzdF9yZWcuaAorKysgYi9kcml2ZXJzL2dwdS9k cm0vYXN0L2FzdF9yZWcuaApAQCAtMjksNiArMjksNyBAQAogI2RlZmluZSBBU1RfSU9fVkdB R1JJCQkJKDB4NEUpCiAKICNkZWZpbmUgQVNUX0lPX1ZHQUNSSQkJCSgweDU0KQorI2RlZmlu ZSBBU1RfSU9fVkdBQ1IxN19TWU5DX0VOQUJMRQlCSVQoNykgLyogY2FsbGVkICJIYXJkd2Fy ZSByZXNldCIgaW4gZG9jcyAqLwogI2RlZmluZSBBU1RfSU9fVkdBQ1I4MF9QQVNTV09SRAkJ KDB4YTgpCiAjZGVmaW5lIEFTVF9JT19WR0FDUjk5X1ZHQU1FTV9SU1JWX01BU0sJR0VOTUFT SygxLCAwKQogI2RlZmluZSBBU1RfSU9fVkdBQ1JBMV9WR0FJT19ESVNBQkxFRAlCSVQoMSkK LS0gCjIuNTEuMAoK --------------vupL6B6jOl0dl79XEW8C83jg--